Carey's long blond locks were styled loose and curled, with pieces pulled back behind her right ear to show off her diamond hoop earrings. But all eyes were on her ample cleavage, which was highlighted by the plunging neckline of her navy bodysuit and diamond pendant necklace.
The 46-year-old diva later took to Instagram, posting a video of herself rocking the hot one-piece while promoting her new MAC cosmetics collaboration.
"So excited for my @MACcosmetics collection available in-store tomorrow!" she captioned it. "Check out the #MACMariahCarey #snapchat filter available today only!"
Carey performed at the venue earlier this week, donning a glitzy silver dress with an equally low neckline. Backstage, she snapped a photo with Beyoncé, who brought her 4-year-old daughter, Blue Ivy, and a friend to the show. Mimi's 5-year-old twins, Monroe and Moroccan, even hopped into the epic pic!