Glee fans go wild as Chris Colfer joins Darren Criss for a duet at London concert

Key points

• Chris Colfer joined Darren Criss on stage at the Royal Albert Hall in London, singing Baby It's Cold Outside to cheering fans. The duet recalled the pair's performance of the song on the television series Glee.
• Colfer said he would never forget the night. Ryan Murphy has written a script for a possible Glee reboot and says cast members are enthusiastic.
• Colfer said he knows nothing about a reboot, but acknowledged fans would be keen on his return.