Christian Siriano on Project Runway Season 19 and His Partnership With Pinterest TV

PS: How do you go about selecting the guest judges? I love how you make sure to match their expertise with the theme of the challenge.

CS: We try to find guests that love the show and love fashion. That is really all I think we could hope for in a great guest. I think also we try to find the right mix of industry leaders, along with fabulous fashion icons!