VIDEO: Sneak Peek - Kristin Chenoweth as Guest Judge on PROJECT RUNWAY ALL STARS Tonight

On this week's episode of Project Runway ALL STARS on Lifetime, the final four go head-to-head in the last episode before the season three finale. Two guest judges -- Broadway's Kristin Chenoweth and actor/singer Nick Cannon -- will help determine the fates of the designers tonight, January 2, at 9 p.m. Check out a teaser for the episode below!

Chenoweth has appeared on Broadway in "You're A Good Man, Charlie Brown", for which she won a Tony Award, and her triumphant star role as the original Glinda the Good Witch in "Wicked," which earned her a leading actress Tony Award Nomination. She is also a New York Times Bestselling Author, has recorded four solo albums and continues to tour with her critically acclaimed concerts. She is currently filming "The Boy Next Door" with Jennifer Lopez.

Chenoweth's critically acclaimed performance in the ABC series "Pushing Daisies" won her an Emmy Award for Best Supporting Actress in a Comedy Series. Her guest appearance on Fox's comedy "Glee," earned her two Emmy Award nominations and a People's Choice Award for Favorite TV Guest Star. Kristin also starred as Annabeth Schott on the hit drama "The West Wing," guest judged on "American Idol" and was featured on CBS' "The Good Wife."

The winner of Project Runway All Stars will be given the ultimate in prize packaging, which includes a fashion spread in Marie Claire and a position at the magazine as Contributing Editor for one year; Next Generation technology and office space from HP and Intel to help grow their business and bring their creative vision to life; a year's supply of resource(R) Natural Spring Water and an all-expenses paid, luxurious trip for two to South East Asia courtesy of resource(R) Water; professional hair styling and photography for all of the designer's upcoming fashion shows throughout the year, courtesy of Alterna Haircare; from Mary Kay, an entire year's worth of beauty products for their fashion shows as well as professional makeup artist services for their debut show; a cash prize of $150,000 and a complete custom sewing studio to launch the winning line from Brother Sewing and Embroidery.

Project Runway All Stars is produced by The Weinstein Company and Bunim/Murray Productions. Executive producers are Harvey Weinstein and Bob Weinstein (Co-Chairmen of The Weinstein Company), Meryl Poster and Barbara Schneeweiss of The Weinstein Company, Jonathan Murray and Gil Goldschein of Bunim/Murray Productions, Rob Bagshaw (Top Chef Masters, Paradise Hotel) and Rob Sharenow, Gena McCarthy and David Hillman of Lifetime Television.