I know what the rules are, but my last couple of trips I have seen a lot of tutus and even full blown prom /princess type dresses on teens and adults. Last November there was a older teen girl (probably 16 or 17) wearing a yellow gown suspiciously close to a Belle dress and I saw her several times all day long s, so no one stopped her. My 14 year old did the pirates league last year and ran around MK and Epcot all day with her make up bandana, sash and sword.