Conan Wears Jeggings!

Conan's new motto for his new show, "When I make a promise ... I fulfill it!" And that's why Conan wore jeggings last night!

The madness started Wednesday when he promised "Project Runway" star Tim Gunn he'd try jeggings, the latest fashion craze. Sure enough, on Thursday's show, the leggy Coco kept his word!

Check out the video!