Whoever said black was basic didn’t see this beauty of a dress coming. Milla’s cut-out halter neck gown is such a showstopper ...

The Blaire Halter Open Back Mermaid Sequin Formal ... Prom Girl’s Sheer-Bodice Long Prom Dress is one of the more expensive options on our list, but it’s worth every penny.

From elegant long mermaid gowns, romantic cottagecore dresses, sleek prom suits, trendy black sheer ... The royal blue one shoulder dress and dark red halter gown are classically chic.