Birth Weight of Baby #2 - Philadelphia,PA

Updated on December 19, 2011
S.L. asks from Chestertown, MD
55 answers

I know there is huge variation, but I'm just curious so I thought I'd take a poll. How big was your second baby compared to your first? Bigger or smaller and by how much? Oh, and what was the sex of each child?

The reason this came up is because my MIL got a cute little outfit for the girl we are expecting in April, but she got the newborn size, which my son outgrew in like 3 days because it only goes up to 8 lbs. I was just wondering if I should exchange it for size 3 months or if I'll regret not having something that fits her the day she's born. My son was 7 lbs, 8 oz at birth, so I'm wondering what I can expect for my daughter. (I know I'll have to wait until she's born to know for sure!) Some people have told me the second is always bigger than the first and others have said girls are usually smaller than boys. So does it average out if you have a boy and then a girl?

TIA!

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So What Happened?

MamaMay-That is something I'm worried about. My mom had 2 girls, I was first at 7 lbs, 2 oz and my sister was born second and weighed 8 lbs, 13 oz! I hope that trend doesn't hold for me, but we'll just have to wait and see.

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J.J.

answers from Allentown on

My first was 3 weeks early and she was 7lbs 7 oz, she did not fit in any of the 0 to 3 mos clothing. I so wished I had newborn or preemie for her. Luckily she was born in June so she mostly went with just a diaper on and wrapped in a blanket. She looked awful coming home from the hospital in the onesie that was huge on her. My son was two weeks late and was 10 lbs. I had newborn for him, which he only wore home from the hospital, and never again. Even though it was snug on him it worked and he didn't look as bad as my daughter did. Now in my family the second child has always been smaller. And I wonder if my daughter had been full term how big she would have been.

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T.J.

answers from Seattle on

2 girls, first born a day early 8lbs 5oz, second born a week early because she was breech 9lbs even! She didn't even fit in newborn diapers!

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B.P.

answers from New York on

I think it's fine to keep the clothes. I don't think there are any hard and fast rules. It has to do with weight and length as to how well the clothes fit. My son was 6 lbs 14 ounces but only 18 1/2 inches. He fit newborn for a month. I am glad I had some because the 0-3 where gigantic at first.

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R.C.

answers from Phoenix on

8# 13 oz -- #1 Girl
9# 1 oz --#2 boy
9# 5 oz--#3 boy
I gained 25 lbs with each and started out at healthy body weight for my height and frame. Increased pregnancy weight gain often increases infant birth weight. Be mindful of the scale and your diet if you want to reduce the risk of a large baby.

3 moms found this helpful
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L.P.

answers from Pittsfield on

My 1st was my biggest at 8 lbs, 5 oz.. I thought my second would be bigger for sure because I felt bigger. He was only 6lbs, 5oz. !!! A full 2lbs. smaller.- I was in shock. He actually fit in preemie clothes (even though they supposedly go up to 5 lbs.)

My 3rd. (also a boy) was 7lbs., 8oz. and my 4th (girl) was 6 lbs.,13oz.

My advice is to keep the outfit- you just never know :)
Congratulations!!

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S.T.

answers from Houston on

I felt SURE my duaghter would be bigger than my son (8lb 9oz), but in actual fact she was only 7lb 10oz! I ate less and that was the reason!

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D.B.

answers from Charlotte on

.

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E.K.

answers from Seattle on

My daughter was 8lbs, 3 oz at birth and she fit newborn outfits for a little over a month. If that helps....

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T.S.

answers from Philadelphia on

My 31/2yo son was a week late (I was induced) and he was 7lb 15oz 21.5" and my 11 mo. old daughter was almost the same, 7lb 14oz 21". I had 2 newborn outfits and a 3mo. size sleeper that was on the smaller size. I liked having the tiny size clothes (I just kept washing them overand over cuz everything else was so big), when I put my kids in the 3 mo. clothes, their legs scrunched up in the pajamas and got stuck.

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S.O.

answers from Chicago on

First girl : 7lbs
Second girl: 10lbs

I hate to imagine how big a third would have been! LOL!

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M.P.

answers from Raleigh on

My son #1 was 8 1/2 lbs. My daughter #2 was 7 lbs. Girls are typically smaller that boys. Go with the newborn size.

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L.S.

answers from Spokane on

#1, girl born at 36 weeks was 5lbs 15oz
#2, girl born at 39 weeks was 7lbs 6oz
#3, girl born at 42 weeks was 8lbs 4oz

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E.C.

answers from Boston on

first girl 8lb 8oz
second girl 7lb 14oz My first daughter wore newborn for like a month so I would have a few newborn pjs for the first week.

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J.D.

answers from Phoenix on

My opinion is that if your children are born full term and they are not twins, their weight increases by a little, as a boy or a girl. I think there is slight chance a girl will be less, but in my experience, it isn't every time.

I have two boys and the first was 8 pounds 6 oz, the second 8 pounds 13 oz. First one was born at 41 weeks, 2nd one at 39 weeks.

In my family it was boy, girl, boy girl. All of us were born near our due dates. I was the second born. My older brother was 5 pounds 5 oz, I was 7 pounds 7 oz, my younger brother 7 pounds something and my younger sister was 8 pounds something.

My older brother had 3 boys and then a girl fourth. His kids' weights started over 8 pounds and went up and his daughters was lighter than the 3rd born at 9 pounds, 3 oz. All 4 were almost 2 weeks past due.

My friends kids were also 3 boys and then a girl last. All born near due date. Her first and 4th were the heaviest at almost 10 lbs. Her middle boys were twins and over 7 pounds each.

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J.R.

answers from Los Angeles on

First was a boy and 7 lb. 5 oz. Born two days after his due date. Second was a girl and 6 lb. 8 oz. They changed my due date with her midstream. She is officially two weeks early, but she would have only been three days early if they kept the original due date.

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V.W.

answers from Jacksonville on

My firstborn, a boy, was 10 days past due date. He weighed 8 lb 12oz.
My second, a girl, was 7 days early (they actually had the exact same due date three years apart, lol)... so, with about 17-18 days difference in their gestational time, she weighed 7 lb 6 oz... so one pound, six ounces Less than my firstborn.

I wonder what she might have weighed had she lasted as long in utero as her older brother did....?
I would keep the cute little outfit your MIL got for her. Girls are often smaller, and really, until she is born, you have no idea if she will be on time or early or what. Subsequent babies, I think, are also less likely to go past their "due date".... soooo.... And Dr's are notorious for being wrong about guesstimating birth weight. I just came from the hospital today, visiting a friend and her newborn... she was due this past Saturday, and was born yesterday (Thursday evening). She was expected to be over 8 lbs by her due date. She was late, and weighed 7 lbs 6 oz. Her 0-3 month clothes are pretty huge on her. She could use some newborn stuff for the next 2 weeks at least...

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B.C.

answers from Dallas on

#1 7lb. 6oz girl (born at 40.4 weeks)

#2 6lb 4oz girl (born at 39.5 weeks)

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D.B.

answers from Madison on

#1 - girl, 9 lbs - 2 weeks over due - never wore newborn
#2 - girl, 8 lbs, 2 oz - 1 week over due - never wore newborn
#3 - girl, 7 lbs 10 oz, 2 days early (yeah) - wore newborn for 2-3 weeks

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M.G.

answers from Seattle on

#1 Daughter [email protected]____.com weeks 5 days was 5lbs 9oz I believe.
#2 Son [email protected]____.com weeks 6 days 6lbs 11.8oz.

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K.L.

answers from Sacramento on

My second was WAY bigger! My first boy was 7lb, 13oz, and my second guy was 9lb, 8oz :-)

1 mom found this helpful

E.S.

answers from Dayton on

Every body is different. ;)
My 1st, a girl, was 5lbs. 12oz.. They said there was something weird about my cord.
My 2nd, a boy, was 7lbs. 7oz..

I was just discussing w/ my friend this morning the same thing. Her 3rd is due any day.
Her 1st, a boy, was almost 10lbs..
Her 2nd, a girl, was 7lbs. 7oz..

HTH!

My son wore newborn stuff for about a month. My DD was in newborn sizes for a really long time-even though she put on weight really fast.

If it's something nice and soft she can wear home from the hospital, I'd keep it. :)

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L.F.

answers from San Francisco on

I would exchange it. My first was a pretty big baby boy and was in 3-6 mos clothes from BIRTH. My second, also a boy--was a whole pound smaller than my 1st and he barely fit into newborn clothes. I would be on the safe side and exchange it. Then she can wear it longer if its too big---- :)

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A.P.

answers from Boise on

#1 Boy 7pounds 10 ounces
#2 Boy 7pounds 9 ounces
#3 Girl 8pounds 11 ounces

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T.H.

answers from Kansas City on

My daughter was 7lbs 11oz and born at 39 weeks.
My son was 9lbs 5oz and also born at 39 weeks, although the pediatrician on duty said she was sure he was at least 40-41 weeks. Plus, I was taking steroids with him too b/c I had the WORST pregnancy rash and my doctor said that could have contributed to his size, although he's now 2 and is still off the charts for height and weight, so maybe not!

And for the record, I'd probably exchange the newborn outfit. I mean they are cute and somewhat useful b/c they are so tiny, but really...it's better to have it a little big and use it for a month or more than to use it for a few weeks, if that! Although, since it's a gift, maybe it'll be just fine to keep it small, use it a few times and move on!

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B.L.

answers from Boston on

Baby 1 -- boy -- full term -- 7 pounds 6 ounces
Baby 2 -- girl -- 3 weeks late -- 9 pounds 6 ounces
Baby 3 -- boy -- 3 weeks early -- 8 pounds 3 ounces

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M.H.

answers from Dallas on

First, girl at 39 weeks 7 lbs 9 oz 19 inches
Second, girl at 39 weeks, 8 lbs 10 oz 20 inches

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K.G.

answers from San Diego on

1st girl born at 38weeks 9lbs 2oz 22 inches long
2nd girl born @ 39 weeks 9lbs 12oz 21 1/4 inches long

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C.W.

answers from Phoenix on

my oldest son was 7 lbs 10 oz, my daughter who came next was 9 pds and my younger son was 8 pds 10 oz. so it varies sometimes

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✪.P.

answers from Chicago on

So my mom told me to just get a few pj's in newborn size and get everything else in size 3 mon. or 3-6 months because "they won't get much use out of it."

Well, I didn't have time to take her advice since I wound up delivering almost 10 weeks early! If I would have bought a lot in those sizes, my babies would have had to wait a LONG time (and would have been the wrong seasonal clothing) since they wore preemie size for quite awhile.

Twin Boy- 3lbs.
Twin Girl- 2 lbs, 15 oz.

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K.H.

answers from Reno on

1st at 40 weeks 8lbs 9oz 21 inches
2nd a boy 38 weeks 9lbs 8 oz 22.75 inches
3rd a girl 39 weeks 7lbs 15 oz 21.5 inches

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M.M.

answers from Washington DC on

My first was a preemie, 3 lbs 3 oz 5 weeks early
then came my daughter at 7 lbs 7 oz 10 days early
daughter number 2 was 7 lbs 6 oz and 8 days late
then the moose was 8 lbs 2 oz and he was right on time

She can wear the outfit home from the hospital and maybe 2 weeks after that.
I hang the girls' coming home dress in my dining room. THe boys' bonnet hangs next to it.

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C.R.

answers from Kansas City on

#1 Girl 6 lbs. 6 oz.
#2 Girl 6 lbs. 14 oz.
#3 Girl 6 lbs. 9 oz.

My first and my third only weighed 5 lbs. 12 oz. when we came home from the hospital, so they both actually wore premie clothes for about a month.

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K.B.

answers from Cincinnati on

All three were full term boys:
#1- 7lbs, 9oz
#2- 8lbs, 6oz
#3- 7lbs, 5oz
My second never wore newborn size, the other two wore newborn for about 2, maybe 3 weeks.

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M.G.

answers from Chicago on

Twin 1: 8lbs, 7oz (38 weeks, boy)
Twin 2: 7lbs, 13oz (38 weeks, boy)
Baby 3: 10lbs, 7oz (39 weeks, girl)

We didn't really use newborn clothes with any of our three (and our little girl was born too big for them).

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M.B.

answers from Austin on

First... girl.... 6 lbs 14 oz. Second... girl.... 8 lbs 12 oz.... third.. girl.... 7lbs 8 1/2 oz...

fourth... boy.... 7 lb 9 oz.

The 3rd and 4th were maybe a week early, so they could have gained another 1/2 pound in that time. The others were right on time, as far as I could tell.

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V.S.

answers from Harrisburg on

My first was 7.7 lbs

My second was 9.11 lbs

They were both boys LoL

Oh and my third was 9.8 lbs

And also a boy. . .

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E.M.

answers from Honolulu on

From what I understand this is more something you should ask your mom.

My mom had 3 children and we each were about 1 pound less that the previous (I was 10 pounds... So no one was under weight), I have 3 children and each of my kids have been smaller by about a pound as well. From what I understand, if your mother had bigger babies each time, you will, if your mother had kids all about the same weight, you will and if the babies each got smaller for her, they will for you too. At least all my girlfriends had it work that way.

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B.B.

answers from Missoula on

9 lbs. 3 oz.
9 lbs. 1 oz.

Both boys.

Get a bigger outfit. You can roll the sleeves or whatever, you can't fix too small.

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B.W.

answers from Pittsburgh on

Looks like u got plenty of answers but here is mine. baby #1 girl born at exactly 39 weeks 7lb14.5oz
Baby #2 boy born at exactly 39 weeks 7lb 14oz.
all depends on the baby.

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C.M.

answers from Los Angeles on

#1 Boy 8 lbs. 11oz.
#2 Girl 9 lbs. 4oz.
#3 Girl 8 lbs. 7oz.
My last baby was the only one that actually fit into newborn clothes. She was able to wear them for about 3 weeks.

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★.O.

answers from Tampa on

#1 was a girl, 7.11 and supposedly 3 weeks early.

#2 is a boy, 10.8 and born the day after the estimated due date.

I know usually each additional baby will be a bit more than the last and generally girls are about 4-12 ounces less than the average newborn boy... just to be safe tho, I'd get the 3 month size.

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S.H.

answers from St. Louis on

#1 8lbs 2oz
#2 miscarriage
#3 5lbs. 2oz
#4 7lbs 9oz

& then we have my sister:
#1 8lbs 8oz
#2 9lbs 6oz
#3 9lbs 12oz

or my SIL:
#1 8lbs+
#2-3 (twins)....6lbs 14oz & 7lbs 2oz. OMG, just shoot me! 14lbs of baby!

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E.B.

answers from Miami on

My first. 37 weeks.... boy....8 11

No. 2. 36.5 weeks.... boy... 7 1

No. 3 36 weeks to the day.... boy..... 8 4

No. 4 isn't here yet, will be in July yay!!!! But I'm curious too I've always wondered do they get bigger or smaller??? As you can see, if I went to 40 weeks with all three I would've had monsterous size babies... lol

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D.C.

answers from Pittsburgh on

2 boys
1st - 8#14oz
2nd - 7#10oz

So, that's opposite of every wives tale you mentioned. I think that it's just impossible to predict!

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R.C.

answers from York on

My son was 8lbs, 11 ounces. He wore newborn size for maybe 1 week and I wish I wouldn't have even bought any that small. The 3-6 month were a tiny bit too big but much more practical because he got more wear out of them. I do not have #2 yet but I will not plan to buy any newborn size because I figure I will have another big baby.

P.L.

answers from Chicago on

first boy 9#, second girl 9#, third boy 9# 8oz

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A.B.

answers from Pittsburgh on

First, a boy one week later, 7lbs 9 0z
2nd, girl 1 week early 6lbs 15oz
Now the doctors estimated that my son would be almost 9lbs and with my daughter they thought only 5lbs due to my low amniotic fluid and I only gained 15lbs with her. I lost weight during most of my pregnancy and started putting back on in the last month and a half.
My mom and even my doctor said that your birth weight is usually a good indicator as to what the birth weight of your children would be.
Most of my friends and family this holds true. One exception is a friend of mine who only weighed 3lbs at birth had 2 9lb children and the one was taken 2 weeks early due to his estimated size.

I would keep the outfit and if anything bring her home in it!

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B.K.

answers from Detroit on

Baby 1 girl...7lbs 6 oz ( 1 week early)

Baby 2 boy 7lbs 4 oz (1.5 weeks early)

Baby 3 boy 7lbs 3 oz (on time)

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M.T.

answers from New York on

There's no way to know how big your baby will be or how that weight will compare to your first. Your second baby's weight isn't based on that of your first baby.
My first was a week late, 7 lbs 5 oz. My second was almost two weeks early, an even 8 pounds. My first was a girl, my second was a boy. Nothing averages out, your baby's weight will be what it is. Boys are not always bigger than girls and second babies are not always bigger than firsts. My own mother had 4 girls, and her first baby was her biggest. On average, boys born at a certain gestational age will weigh a little more than a girl (a few ounces) but the baby girl that you are carrying does not know that the first baby was a boy, it's not that any girls you have will weigh less than boys you have, but that a girl born at say, 39 weeks, 4 days will ON AVERAGE (not a guarantee or every time) weigh something like 4-6 ounces less than a boy born at same gestational age.
There is no way to know or predict your baby's weight or how long she will fit into this newborn outfit.

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K.K.

answers from Minneapolis on

#1 girl born 40 weeks 3 days 9.2
#2 boy born 39 weeks 3 days 10.7
#3 boy born 39 weeks 2 days 9

I have to say I ate way better with the 3rd. I gained 40lbs with the first two and only 19lbs with the 3rd.

J.B.

answers from Houston on

three boys, 7 lb 14 oz, 7lb 11 oz and 7lb 8oz, so downward trend for me :D But my little one that was 7,8 wore newborn stuff for like 4 weeks. He is five weeks today and officially out of those clothes. I mean he was 8lb 3 oz at his two week check and 9lb 7oz at his 4 week check and I got lots of use out of newborn clothes. So I think if she was in his size dept, you would be ok actually. Good luck!

K.A.

answers from San Diego on

My first 2 are boys and weighted exactly the same and were the same length as well. On paper my second was 1/2 oz lighter than his brother because he pooed on the nurse's hand while getting him to the scale. My third is a girl. She was a pound and an oz or 2 smaller than her brothers and 2 inches shorter then them.
It was nice having the newborn sizes for my daughter because she really swam in the 0-3 months and had a real issue is her feet weren't touching something, either the foot of the sleeper or a pair of socks. She didn't like when they were "floating" in a sleeper that was too big. We sent family out to get more of the newborns because she was in them for a couple weeks and they made her happier.
I would keep it, just not stock up on a lot of them.

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S.S.

answers from Memphis on

#1-6lbs 8oz (on time)
#2-8lbs 13oz (late)
Both girls and on #2 doctor's estimate was 7#ish!
Good luck to you!

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E.F.

answers from Kalamazoo on

I don't wish my experience on you. Boy #1: 8 lbs. Boy #2: 9 lbs 11 oz. I pretty much birthed a toddler. Did I mention how much I came to love the epidural? ;D Congrats on your pregnancy and I wish you and your little one a safe and healthy delivery.

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T.M.

answers from Philadelphia on

#1 girl 7lbs
#2 girl 7lbs 12.5oz
#3 girl 8lbs
#4 girl 7 lbs 14oz

My sister had her son at 7lbs something and then her daughter was 5lbs something. Everyone is different :)

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