Below the 80ft tall Norway Spruce which will be lit on Wednesday night, and with Santa Claus by her side, Mariah belted out the track – and gave fans an eyeful of her ample cleavage while prancing around the stage in a low-cut red and silver dress.
Diva: Mariah Carey glittered in a red and silver tulle dress as she took the stage in Rockefeller Center in New York City on Tuesday
The 42-year-old star took to Twitter before her taped performance.
‘Walking to the stage to perform at Rock center. Let the festivities begin! Thx 2 all the lambs who are braving the temps here! LYM!!!’ she wrote her eight million-plus followers.
Strike a pose: Mariah stole the spotlight from Santa Claus
Festive pair: The performers took the stage, decorated with trees, lights and oversized boxes
Temperatures fell into the 30s in midtown Manhattan on Tuesday night.And while Mariah acknowledged she would be performing in the bitter cold, she wasn’t detoured from slipping into a frilly dress.
Still there wasn’t a hint of a shiver from the star, who daintily held her mic in hand with a pair of opera length red satin gloves to match her frock.
With their helpers: A team of backing dancers took the stage while Mariah performed All I Want for Christmas Is You
Mariah is among a host of stars performing at the 80th annual Christmas in Rockefeller Center tree lighting celebration.
CeeLo Green, Il Divo, Rod Stweart, Victoria Justice, Trace Adkins, Chris Mann and the world famous Radio City Rockettes are among the featured acts.
Thousands gathered in the cold to watch Mariah’s taping ahead of Wednesday night’s main event.
Naughty or nice? Mariah tossed her hair as Santa looked on
Nevermind the cold: Mariah donned the short frock despite temperatures plummeting into the 30s
Bette Midler and Billy Crystal will also make special appearances at the two-hour event, televised by NBC on Wednesday night.
The Rockefeller Christmas Tree was unveiled earlier this month in Rockefeller Center.
Topped with a Swarovski Star comprised of 25,000 crystals and weighing 550lbs, the tree will now be lit daily from 5:30am to 11:30pm through January 7; 24 hours on Christmas day; and until 9pm on New Year’s Eve.
Silver bells: Mariah also donned a wintry silver gown and fur for another number
Glam: The star seemed to be inspired by retro Hollywood glamour