Hi Arielle, just like Naari said as long as you are yourself it's no big deal. Boys can be girlish and girls can be a tomboy, it certainly hasn't anything to do with gender identity.
Though I'm kind of girly I also like to hang out with guys and can be tomboy-ish some days... some days (or when I'm just lazy:P) I just wear pants and a basic shirt, no or very few make-up hair in a ponytail , other days I really like to curl up my hair and wear a nice dress or other outfit and be stylish and wear nice make-up etc. It goes up for lots of girls I think.