You may have to choose your battles. It's probably more important to restrict her use of slang and her watching of inappropriate TV shows, so you may want to compromise on the clothes by letting her choose her shoes or what she wears on Saturday.
Encourage friendships between your daughter and other girls who are more traditional five-year-olds. Joining a soccer team or a Daisy Girl Scout troop can give her the opportunity to make friends with other girls with similar interests. Invite other girls from your daughter's class over to your house to play.