The hitmaker stole all attention away from the basketball game between the Atlanta Hawks and the Los Angeles Clippers as she sat on the front row at the Staples Centre.
The 46-year-old’s ample bust was impossible to miss in her skimpy ensemble, which struggled to keep her assets covered.
Wearing her tresses down in a loose wave, Mariah beamed at her man, 33, after opting for a tiny lace top, complete with a bra-style neckline and sheer midriff.
The mother-of-two stuck to the legs or chest rule by teaming the racy number with skintight leggings, which featured see-through, lace-up detailing on the side. Mariah also chose a towering pair of boots, a show-stopping diamond necklace and coordinated earrings for the sporing event.
Fans were later treated to an impromptu performance by the beauty after her classic song, Fantasy, started playing at the stadium.
After being passed a microphone by an employee, Mariah skilfully belted out, “Oh yeah!” in a moment that was captured on Instagram. The couple, who reportedly started dating late last year, were also seen drawing a crowd as they dined out before the game.
Their outing comes after Mariah shared a number of saucy Valentine’s Day images with her 5.3 million followers.
Wearing little more than studded lingerie, the singer was pictured in an over-sized bathtub with Bryan as they sipped on champagne.