I have a graduation coming up n i need a dresss wat do i do?

ok im only in 6th n my future graduation is comin up 4 6th but da thing is i dont know wat 2 choose 4 a dress n i wanna make it 1 2 rem. along wit grad. n my price range is around $100 so wat suggestions do u have 4 me but i want 2 look up shops in rochester ny or irondeqoit ny so plz put a link up as well ty