Ariana sang her heart out at Michael Buble's 'Christmas in New York' TV special.
To celebrate the holidays NBC presented Michael Buble's Christmas in New York special on Tuesday.
The televised concert featured a score of big musical stars, but no one spread the Christmas cheer quite like Ariana Grande, who sang seasonal standards.
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The "Bang Bang" singer rocked her trademark white miniskirt and ponytail, and sang her beautiful rendition of Wham!’s famous holiday tune, "Last Christmas."
Later in the show, Grande, now in a fiery red jumpsuit, took the stage with Buble and they performed a duet of "Santa Clause Is Coming to Town" that the audience adored.
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Aside from Grande, eight-time GRAMMY winner Barbara Streisand also performed.
For more Christmas fun, check out the video below to see which films your favorite stars love to watch during the holidays!