Mariah Carey is all about flaunting her hourglass figure this holiday season!

The "All I Want for Christmas Is You" singer looked fit and skinny when she stepped out in NYC on Dec. 15 wearing a tight, teal trumpet-style dress.

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mariah carey

The mother-of-two is currently performing a series of shows at the Beacon Theatre and has been enjoying the Manhattan nightlife while in town. Her onstage attire also compliments her newly slim, but still curvaceous, physique.

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Mariah's new look may also have something to do with boyfriend James Packer, who recently visited the 45-year-old in the Big Apple.

"Reunited in New York #Reunited #NewYork #JimmyPack #BeaconTheater #MerryChristmas," the Grammy winner captioned a photo of her and her beau, 48.

Scroll down to see how Mariah's weight has changed over the years!