Kaia Gerber Just Wore This Cult-Fave $18 Thong Under a Sheer Fendi Couture Gown

In the world of red carpet fashion, everyone tends to focus on the glamorous gowns, designer heels, and ornate jewelry. While I certainly love a good jaw-dropping dress—can you believe Zendaya's looks for The Odyssey press tour?—a lot more goes into creating a good red carpet look than meets the eye. The correct undergarments are just as essential as the right length of pants or type of sleeve. Bras and underwear are often celebrity stylists' secret weapon, so I'm always curious what their favorite pieces are.

For the London premiere of The Shards, Kaia Gerber wore a pair of black Intimissimi Brazilian Panties in Seamless Ultra Light Microfiber ($18), which come in over a dozen different colors and boast hundreds of five-star reviews. The seamless panties are made with moisture-wicking, breathable microfiber with a 100% cotton inner gusset. Scroll down to shop the exact pair of underwear she just wore on the red carpet with a fantastic Fendi couture silk chiffon gown.