The Best Super Bowl Weekend Celeb Outfits — Including Becky G.'s "Lampshading" Look

I wasn't in attendance, but Sports Illustrated's SI The Party on Feb. 7 made headlines for its very A-list guests, which included Sofía Vergara, Jon Hamm, and Hailey and Justin Bieber. The latter, fresh off his iconic Grammys performance, apparently took the stage with Ludacris. Ariana Madix stunned in an off-shoulder, pinstriped mini dress.