Mariah Carey Trades an Ugly Christmas Sweater for a Diamond Bra

Mariah Carey wore a diamond, lacy bra while filming Carpool Karaoke with James Corden

Photo: X17online

All Mariah Carey wants for Christmas is a diamond, lacy bra.

While Santa’s big day is still 64 sleeps away, that didn’t stop Mariah Carey and James Corden for getting into the holiday spirt on Friday — as they filmed a “Carpool Karaoke” segment for Corden’s Late Late Show.

But though Corden, 38, wore and oversized green “ugly” holiday sweater for the car ride, Carey opted for something a little more sexy.

The Grammy winner turned up the heat in skin-tight jeans and a sexy Balmain red leather jacket – zipped low to show off both her cleavage and her stunning bra.

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The eye-catching undergarment had a strip of diamonds falling vertically from her neck to her naval — a far cry from the festive Christmas scene happening on Corden’s top.

Both stars wore jeans as they drove around in Corden’s signature black SUV — this time outfitted with a Christmas tree on top.

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While no air date has been announced for the segment, Carey will undoubtably be singing her holiday megahit “All I Want for Christmas Is You” — off her classic 1994 album, Merry Christmas.

The song — released 22 years ago — has become her best selling song with over 145 million copies sold.

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It won’t be the first time Carey’s recreated the song for late night. In 2012, she joined Jimmy Fallon and The Roots on The Tonight Show for a rendition of the chart-topper — orchestrated with classroom instruments.

Of course, Mariah Carey has more in her Christmas cannon — songs that will be on display when she returns to New York’s Beacon Theatre for the third annual “All I Want For Christmas Is You” concert series for four dates this December.

The Late Late Show with James Corden air weeknights at 12:30 a.m. ET on CBS.