Mariah Carey Stuns With Daring Neckline in New Selfie After James Packer Split

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That's one way to show off a revenge bod

Mariah Carey
was looking red hot on Tuesday night, flaunting her curves in a glittering red high-cut one-piece with a plunging neckline. The 46-year-old singer rocked a jewel-encrusted necklace and kept her hair in loose waves as she geared up to hit the stage in Mexico City, Mexico, for her ongoing Sweet Sweet Fantasy tour.

WATCH: Mariah Carey Cuts Loose With DJ Khaled After James Packer Breakup 

"#Mexico it's showtime," she captioned the super sexy snap.

RELATED: Inside Mariah Carey and James Packer's Prenup Negotiations: Planes, Jewelry and Clothes 

Carey has kept busy with work amid her very public breakup from ex-fiance James Packer. Earlier this week, new details were revealed about the former couple's prenup negotiations, which is said to have dealt with everything from what's considered "gifts" between the two, to the use of Packer's private plane, to how much money Carey would have gotten for every year she was married to the billionaire businessman.

A source told ET that the duo's relationship didn't crumble because of the unsigned prenup, but rather, because "things didn't work out."

For more on the split, watch below.