On Monday's Watch What Happens Live, Glee stars Lea Michele and Chris Colfer spilled some serious Glee gossip to host Andy Cohen: Real Housewives of Atlanta star Nene Leakes will guest-star on the Fox dramedy.Jane Lynch's Sue Sylvester? Shortly after Michele and Colfer spilled the beans, Leakes tweeted: "Running through the house screaming Gleeeeee! Coach Roz Washington is gonna get that Sue Sylvester! I'm so proud of myself."Get more scoop on Leakes' role in the clip below. Glee returns Jan. 17 at 8/7c on Fox.