Santino Rice, Chris March

We've been waiting sew long for this moment.

Lifetime has announced Project Runway: All Star Challenge, in which eight Runway alums will partake in a fashion face-off.

Meet the designers of Project Runway Season 6

So who's in? Our favorite villain Santino Rice, cutie-pie Daniel Vosovic, tatted-up Jeffrey Sebelia, teddy bear Chris March, beach girl Uli Herzner, spunky underdog Sweet P and no-nonsense Korto Momolu have all signed on to compete on the special. The winner of the sure-to-be-fierce battle will take home bragging rights and a $100,000 cash prize.

Judges Heidi Klum, Michael Kors and Nina Garcia are all on board, and Tim Gunn will be serving as mentor — just like the good ol' days!

The two-hour special is set to air Thursday, Aug. 20 at 8/7 CT, leading up to the Season 6 premiere of Project Runway.

Check out pictures of Runway styles from last season

What do you think of the All-Star cast?