Carrie Underwood Song Exclusive Preview: 'Undo It'
Carrie Underwood Promotes The Fight Against Breast Cancer NASHVILLE, TN - OCTOBER 02: Carrie Underwood visits the Grand Ole Opry House to flip a switch to turn the backdrop pink to symbolize the fight against breast cancer on October 2, 2009 in Nashville, Tennessee. Getty Images

Country star Carrie Underwood is returning to Fox, the network that catapulted her to stardom with "American idol," to host a variety special.

The two-hour project, tentatively titled "Carrie Underwood: An All-Star Holiday Special," will air December 7.

She will perform hits, holiday classics and songs from her upcoming album, and participate in comedy bits. Musical guests signed so far include Dolly Parton, Brad Paisley and David Cook, last year's "Idol" winner.

LISTEN TO AN EXCLUSIVE PREVIEW OF CARRIE UNDERWOOD'S NEW SINGLE

Underwood, the fourth-season "Idol" winner, is the most successful recording artist to emerge from the competition series, with sales of more than 10 million albums in the U.S. and four Grammy Awards. Her next album, "Play On," will be released November 3.

The Underwood special has been billed as a one-off, though the broadcast networks have been looking for ways to revive the variety series genre, so far unsuccessfully with Rosie O'Donnell (NBC) and the Osbournes (Fox). John Mayer signed on in January to star in a variety pilot for CBS, which is still percolating at the network.