Hilary Duff made her Sports Illustrated Swimsuit debut in a slinky swimsuit. Duff, 38, showed off her curves in an off-white OYE Swimwear one-piece, featuring a plunging neckline, halter straps and a cheeky back while posing on the cover of SI Swimsuit's 2026 issue, which hits newstands beginning Thursday, May 14 and nationally on May 26. Duff, who was photographed by Kat Irlin in South Caicos, Turks and Caicos, opted for a soft makeup look, including dewy skin, manicured eyebrows and bronzed cheeks. She wore her blonde hair down and styled in beachy waves.