Darren Criss joined his Glee co-star Demi Lovato onstage at Toronto's We Day festival for a duet of her hit Skyscraper. The couple was backed by a boys' choir.
These celebs prove T. Swift doesn’t have the monopoly on famous pals.
Which Oscar-nominated actor went to school with the Duke of Cambridge?
As if! Clueless turns 20-years-old this July.
Which actor has been working on the same television network since 2002?