Last night, the red carpet at the Billboard Music Awards appears to have reached peak cutout. Both Jennifer Lopez and Rita Ora showed up in white, belly-button-revealing gowns (J.Lo’s by Charbel Zoe; Ora’s by Fausto Puglisi), while Empire star Taraji P. Henson opted for an Alexandre Vauthier dress featuring side-cutouts stacked from her armpit to her knees. Meanwhile Balmain was the big winner of the night as Taylor Swift accepted a plethora of awards (including Top Artist) dressed in a white halter jumpsuit and Ileana Makri ring. Also supporting the brand: Kendall and Kylie Jenner, Chrissy Teigen, and Lily Aldridge. Mariah Carey paired her Tom Ford with a pair of sunglasses on the red carpet, while the singer Dencia donned a pair of reflective ski goggles for her look. Click through the slideshow to see all these looks and more, including Britney Spears, Zendaya, Laverne Cox, and more.