Dress to impress' means different things when the invite says beach casual vs. black tie. Whether you're planning your dream day or decoding an invitation, here's your guide to the What to Wear to a Black Tie Wedding The Girlfriend's Guide to Black Tie Dress Codes. Black Tie is the second most formal dress code and reserved for formal evening events and galas. Women should opt for floor length evening gowns Dresses Jonathan Simkhai Black And White Stretchy Midi Dress Size Small Poshmark Black tie dress code explained British GQ British GQ Expert Approved Breakdown Of The Black Tie Wedding Attire Dress Code With Examples