Megan Mullally went unnoticed at Sunday’s performance of Leslie Jordan‘s solo show, “My Trip Down the Pink Carpet” — until she started laughing. When Jordan, who played the nemesis to Mullally’s character on “Will & Grace,” delved into his material about working on the hit NBC sitcom, Mullally was in hysterics. “Her laugh was a dead giveaway,” a spy reports. “It’s so distinctive. By the end of the show, there wasn’t a person in that audience who didn’t know who she was, and she totally got mobbed by fans.”