Ariana Grande has been celebrating this holiday season in a way that's totally beneficial for us: She released a modern-day masterpiece of a Christmas song with 'Santa Tell Me,' along with a super cute and cozy video for it, performed on 'A Very Grammy Christmas' and tonight (Dec. 17) she performed on 'Michael Buble's Christmas in New York' Special. Phew! Girl is crazy busy.

In tonight's special, we got a chance to see Ariana totally kill it not just once, but twice. She started off by performing her own version of every sad sack's favorite Christmas lament, Wham!'s 'Last Christmas.' Wearing a super mini white skirt with a lacey, white, cropped camisole, Ariana strutted around the stage expertly delivering the song. She wore a pop of color on her lips with the perfect shade of pink lipstick and totally engaged the crowd as the song progressed. We're totally obsessed.

Later on in the show, Ariana showed up again to duet with Michael Buble, this time on the holiday classic 'Santa Claus is Comin to Town.' She changed into a long red pantsuit and harmonized beautifully with Michael.

We're not gonna lie -- we're a little bummed out that Ariana didn't perform 'Santa Tell Me,' but any Ariana is good enough for us so we don't have that much to complain again. You can check out both performances in the video above!

Need Gift Ideas? Browse Through PopCrush's 2014 Holiday Gift Guide!