Kaia Gerber's US Open LBD Features The Open Back Of Our Fall 2026 Dreams

Kaia Gerber has never been afraid to make a fashion statement. From her red carpet looks, like the party dress from the early aughts she wore to the 2024 Toronto International Film Festival, to her effortless everyday street style, she's somehow always both on-trend and ahead of the curve. She proved that once again at the 2026 U.S. Open.

Kaia Gerber and Homer Gere attend the US Open 2026 at Arthur Ashe Stadium in New York City – August 25th. pic.twitter.com/B4AY19FRNp

— Kaia Gerber News (@updatesofkaia) August 26, 2026

While everyone else went tenniscore, Gerber stepped out in a body-skimming black midi dress designed by Yana Matkivski. With a wide V-neck and narrow pencil skirt, the look was pure '90s supermodel, drawing even more comparisons to Gerber's famous mom, but what caught our eye was its plunging open back. The dress actually includes its own internal undergarment to prevent the low-back silhouette from shifting as you move, which explains why Gerber remained picture-perfect as she sauntered through the stands. It not only made the case for dressing up for the U.S. Open but also ushered in one of the chicest looks for fall 2026.

With her exposed back, Kaia Gerber has once again displayed an up-to-the-minute sixth sense for trends. Only a month earlier, Who What Wear declared the last half of 2026 the low-back era in response to the deep necklines of 2025. A plunging back can deliver the same daring silhouette, but the skin it shows is a little less intimate, striking a perfect balance between fashion-forward and an imminent wardrobe malfunction.

Sure, you might have to go braless when you're wearing this dress, but once you've mastered that art, an open back is one of the most adaptable cuts out there. Depending on styling, it can be as casual or as formal as you want. You can go full glam like Gerber, who accessorized the dress with a tiger-print Fendi purse and a chunky gold Cartier watch, or keep it breezy in woven sandals and flowing linen.

When it comes to fabric, however, you might want to consider something equally versatile. The dress Gerber wore, named "The Donna Dress" by Matkivski, is made from a viscose ponte knit, but if a $525 dress is out of your budget anyway, you can get a similar look — and trend profile — with jersey. Understated jersey knits are one of the hottest fabrics for fall 2026, not to mention one of the most comfortable fall 2026 fashion trends. You may not be heading to the U.S. Open, but that doesn't mean you can't look like it.