Hi, my name is T. and I was (is) a Tomboy my whole life. In fact, I'm in jeans and a mens sweatshirt while I type this at work. Growing up, I played sports with the boys including TACKLE football. I wanted to wear boy clothes and with a name like "T." I was often mistaken for a boy. My mom let me be. As I got older, I still dressed in what I was comfortable in (jeans) and the thought of wearing a dress/skirt was a nightmare for me. Even now I only own about 3 dresses...one being my wedding dress.
In junior high, I "went out with" (dated) boys. In high school, I dated guys - a lot. After high school, I dated men - a lot. Don't take that the wrong way, I was in no way a slut. In fact, a lot of my dating experiences were with guys that were my "buds". I could talk sports with them, watch sports, appreciate cars, motorcycles, etc. I was rarely nervous around guys because I hung out with them so much. They weren't aliens to me. The natural sexual progression sometimes led to a more than friends situation.
I had a lot of female friends and I still do. I can be "girly" with the best of them. I know how to dress up when I need to, I just don't enjoy it every single day.
My advice to you would be to let your daughter be who she is and accept and love her for it. Wishing she was more girly isn't going to make her that way (trust me). My younger sister was/is a Tomboy, too. She's 15 now and about 3 years ago started to want to dress from the girls section, have her ears pierced, etc. When/if she's ready, she'll change.
T. (with an "i") ;)