This collection of semi formal dresses offers some amazing alternatives to the little black dress. Sexy cocktail dresses for an evening wedding guest or holiday celebration. Short dresses with halter tops or strapless bodices that are fun and flirty. Semi formal dresses are a great way to extend your budget. Dress them up with accessories, an up do, and a sexy pair of sandals for prom or wear them out on a hot date. School dance and homecoming dresses or sweet sixteen party dresses. Make any occasion special in one of this semi formal designer dresses.