Fashion Star premieres tomorrow! Elle MacPherson hosts the new competition show, while Jessica Simpson, Nicole Richie, and John Varvatos serve as celebrity mentors to the 14 designers vying for the top prize. And there are are few elements that set this show apart from other fashion reality programs. One notable twist: winning designs will be shoppable the next day! Click through to gallery to find out exactly how the show works, and tune in to NBC Tuesday, March 13th at 9:30/8:30c to catch the series premiere.