The 32-year-old Keeping Up With the Kardashians star, who is expecting her first child with boyfriend Kanye West in July, flaunted her baby bump in the tight ensemble that featured flowy long sleeves and a keyhole neckline.
Though West didn't join Kardashian on the carpet, the mom-to-be did walk (in tall black pumps!) with sister Kylie Jenner, 15, who wore a stylish white pencil skirt and crop top for the event.
During the show, Kardashian took the stage to introduce a performance. "From her starring role in the movie Spring Breakers to the upcoming release of her fourth studio album, our next performing has been killing it," Kardashian said, proudly showing off her bump on the stage. "She's an actress, multi-platinum recording artist, and she's here tonight to perform her new song for the very first time, 'Come and Get It.' Give it up for Selena Gomez."