The Insider.com

Project Runway has given some of the industries' harshest judges a platform for sartorial assassination, but Thursday's episode of the newly launched All Stars season will feature the franchise's most outspoken critic: Miss Piggy!

• January 17, 2012Chloe Moretz on Dressing 'Age Appropriate'
• January 17, 2012Rihanna Strips Down to Her Armani Undies
• January 16, 2012Trend Spotting: The Golden Globes Edition!
• January 15, 2012WATCH: The Golden Globes' Most Fabulous Fashion
• January 15, 2012Golden Globes: Best & Worst Gowns
• January 15, 2012The 2012 Golden Globes Red Carpet Fashion

MORE: Kenley Collins Talks About Her Runway Return

The star of 2011's Muppets movie lends her fashion knowledge, and knock-downs, when the designers are tasked with creating a cocktail dress for the attention hog.

MORE: Meet the New All Stars Judge

Joining Miss Piggy in this week's judging is Gossip Girl stylist Eric Daman, who gets into a bit of an argument with the karate-loving lady. Watch!

Project Runway: All Stars airs Thursday at 9 p.m. on Lifetime.