Prom is a great opportunity to use your outfit to express yourself and your love for fashion.  Some classic trends remain popular every year, like simple neutral dresses with a little bling around the waist. But it can be difficult to pinpoint what trends will become the latest and greatest so many months before prom, so we put together a little cheat sheet to give you some ideas before the big day! Two is better than one Stand out at your prom with a two-piece ensemble. A crop top with a high waisted skirt will put an interesting spin on formal wear. This chic combination gives the appearance of a…