For the sixth season of "Project Runway," Gunn had to adjust to the show's move to Los Angeles.
He had to rethink his wardrobe to fit the L.A. lifestyle.
"I got there and realized I don't even have the right clothes because I brought suits and ties ... there is one challenge during which you'll find me in a pair of flip-flips," he says, laughing.
The season kicks off with Lindsay Lohan as a guest judge. Gunn says she was a great fit to the show (airing 10 p.m. Thursdays).
"She was absolutely wonderful. She knows clothes, she knows what she likes, what she doesn't and she's able to articulate that."
For It's been a long wait in between seasons five and six, as NBC Universal and the Weinstein Co. battled it out in court over whether the show could move from Bravo to Lifetime.
Now that the show is on a new network, don't expect Gunn to be any less of a calming, mentoring presence for the designers.
"I only want them to succeed," Gunn says. "I have a very particular way of operating which is to believe in them and to believe in their abilities ... I'm also respectful of the wear-and-tear that they go through on the show."
Gunn has been described as the antithesis of "American Idol" judge Simon Cowell, who has no problem giving negative feedback.
"The British have a very different way of operating ... `You are nothing and you will never become anything' and that's repeated to students over and over ... Talk about deflating. I believe in giving individuals opportunity," Gunn says.