VIDEO: Sara Bareilles, Seth MacFarlane Sing 'Baby It's Cold Outside' on NBC Christmas Special

Below, watch Seth MacFarlane and Sara Bareilles perform the holiday classic "Baby, It's Cold Outside," as part of NBC's CHRISTMAS IN ROCKEFELLER CENTER, broadcast last night.

About the show:

The arrival of the holidays wouldn't be complete without a dazzling display of musical talent and the lighting of the world's most famous Christmas tree, hosted by "Today" show anchors Matt Lauer, Savannah Guthrie, Al Roker and Natalie Morales.

The star-studded tree lighting extravaganza featureed musical guests including Mariah Carey, Lady Gaga & Tony Bennett, Cyndi Lauper featuring Billy Porter, Seth MacFarlane featuring Sara Bareilles, Idina Menzel, Pentatonix, LeAnn Rimes, the Rockettes, Prince Royce, Darius Rucker, and Trisha Yearwood performing current hits and holiday classics from Rockefeller Center in New York City.