Get ready for a whole new season of sewing machine meltdowns and catwalk cattiness. The fourth season of "Project Runway," the hit reality series that follows 15 designers as they compete for a lucrative clothing line contract, premieres tonight on Bravo. Get to know the cast before host Heidi Klum and mentor Tim Gunn tear them -- and their designs -- apart. (Mitch Haaseth/NBC Universal)