Christmas came early for U.K. based Gleeks over the weekend. Glee alums Chris Colfer and Darren Criss reunited, almost a decade after the hit Fox musical comedy-drama wrapped, for a London performance of “Baby It’s Cold Outside” on Sunday, October 18. “The only thing inappropriate about doing this song is doing it without me,” Colfer, 36, who played Kurt Hummel on the show, said as he hit the stage during Criss’ one-night-only Royal Albert Hall concert rendition of the track. (Originally released in 1944 by Frank Loesser for his wife, Lynn Garland, to sing with him, the son...