Dazzle All Night Long In A Head-Turning Black-Tie Wedding Guest Dress

When a wedding invitation says "black tie," the couple is throwing the gauntlet: They want their loved ones to dress to impress in a big way. These lavish affairs call for luxurious floor-length gowns and tuxes. Think rich fabrics — satin, silk, chiffon, and tulle — in styles reminiscent of the red carpet or a gala. In other words, it's an adult excuse to bring out your inner princess. Which can sound fun — but also stressful. While many of us may have a cocktail dress or three knocking around in our closet, it's rarer to find a ball gown just waiting to be dusted off for your next black tie event.

But don't panic; buying a new black tie wedding guest dress doesn't have to be intimidating — or even widely expensive. If you're stressed about what to wear to an upcoming black-tie wedding (or even where to look) we're here to help with a roundup of the best black-tie wedding guest dresses starting at under $100.

We've scoured the internet for floor-sweeping gowns from retailers like Saks Fifth Avenue, Nordstrom, Anthropologie, and Revolve. Find modern black tie dresses in luxe gemstone hues and black-tie-optional ones in striking abstract patterns, along with a couple of dreamy silhouettes. There are also several chic, timeless all-black gowns for a classic look. All that's left is for you to grab your wedding essentials, spritz your favorite perfume, and step into your most comfortable party shoes for the night. Get ready to feel and look your very best — our stunning picks will surely grant you a spot on the best-dressed list.