I'm going with my friend tommarow to a sweet 15 (Quince?) Lol..(Help.?(:)?

It's a quince. U cud wear a party dress and some heels. Me n my friends always wear strapless dresses tht r a lil bit above the knee n then either flats or heels. U CUS dress casual but most of ur friends probly won't dress like tht n ur gonna feel kinda left out. So a party dress will look good. It's a party! U wanna have fun. N u wanna dance n stuff. If u look too extravagant ur gonna want to look good n not do much. So yeah lol. I'm going to a 15 today too lol. But idk what to wear D: lol. Anyway. Hope u have fun :))