6 Best Shapewear for Wedding Guest Dresses 2026, Including Bras and Shorts

Best Body Shaper: Shapellx Bare Essentials AirSlim Hourglass Full Body Brief Bodysuit

What we love: If you’re looking for a true body shaper, this Shapellx bodysuit delivers some of the strongest contouring of any we tested. It has a noticeably cinched effect while smoothing through the stomach, waist, and hips. “The hook-and-eye fasteners up the chest with a zipper on top really sculpt your waist—I’ve never had an hourglass silhouette like this before,” says Glamour commerce editor Malia Griggs, who wore it under a high-neck fit-and-flare dress. “It gave my booty some lift, too (nice).” A built-in bra and boyshort cut softened by lace trim provide full coverage. For a strapless shaper, we like Skims’s Body Core Sculpt Waist Cincher corset.

Best Strapless Bra: SpanxSmooth Suit Your Fancy Strapless Bra

SpanxSmooth Suit Your Fancy Strapless Bra

What we love: When your ball gown bares your shoulders, a good strapless bra is a must. We’ve tested plenty of styles over the years, and this one from Spanx remains a favorite. “The wings have more silicone strips than any other bra I tried, and silicone dots along the cups keep it from slipping or gaping,” says Earley, who wore it through a full day of walking and hours of dancing with only minor adjustments. The smooth, breathable fabric lies flat under clothing and creates a natural shape without visible lines, making it a smart option for strapless, off-the-shoulder, and sweetheart-neckline dresses. (For a strapless, backless dress, you’ll need a different solution entirely, like a sticky bra, nipple cover, or boob tape—our favorite for special occasions is Gatherall’s reusable adhesive bra.)