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Danielle Frankel Rosalie Gown Speaking of timeless: The puff-sleeved empire waist dresses that were popular in the '90s actually date all the way back to the Regency Era

However, even more important than that is to look for some fine print at the bottom of the invitation that might read "Black tie Optional" or "Black tie"

Empire waist Empire waist dresses raise the waist seam to just below the bust, causing the skirt to flow down from there rather than from the natural waist

Crisp White Shirt: the cleanest contrast

Plus, the shade is flattering on every silhouette, whether you go for a sleeveless maxi dress, a one-shoulder midi, or an off-the-shoulder mini

Rivoli Bow Choker, $14, Nasty Gal 24