‘Glee’ Reunion: Chris Colfer Joins Darren Criss Onstage to Perform ‘Baby It’s Cold Outside’ During London Concert

Darren Criss’ one-night-only concert at the Royal Albert Hall in London became a “Glee” reunion when the singer surprised audiences by bringing out Chris Colfer and performing “Baby It’s Cold Outside” as an homage to their characters on the hit show, Kurt Hummel and Blaine Anderson.