In the clip, the newlywed and soon-to-be mom shows off three different holiday looks that include a satin red cocktail dress accessorized with a big red bow and a tulle gown, which makes her look like as bright as the star at the top of the tree.

The holiday special, airing Dec. 11 at 10 pm EST on NBC, will feature Kelly performing classic Christmas carols and showing off her comedy chops with skits featuring country stars like Blake Shelton, Trisha Yearwood and her new mother-in-law Reba McEntire, along with comedians like Robin Williams and Whoopi Goldberg.

Today (Dec. 4), Clarkson will get a chance to perform more hits off her new Christmas album at the 81st annual lighting of the Rockefeller Center Christmas tree.