April 29, 2011 at 8:39 PM ET
The remaining "Biggest Loser" contestants are in for an amazing treat Tuesday when fashion guru Tim Gunn helps them dress their new figures during Makeover Week.
But it's not just any old makeover. The contestants get fairytale makeovers from the "Project Runway" mentor along with two surprises. Check out these sneak peeks:
Plus, Fairy Godfather Gunn talks about why he likes doing the show so much and how he decided on the gowns:
The episode airs Tuesday, May 3 at 8 p.m.