Taylor Swift Sings 'Money On My Mind' with Sam Smith - Watch Now!

Taylor Swift dons a glittery London tee as she takes the stage for her concert at the O2 Arena on Sunday (February 2) in London, England.

The 24-year-old entertainer was joined on stage by British singer Sam Smith, 21, for a duet of his hit “Money on My Mind.”

PHOTOS: Check out the latest pics of Taylor Swift

“Tonight at the O2, @samsmithworld sang my new favorite song “Money On My Mind” and smashed it! You need this song/artist in your life!” she later tweeted.

WHAT DO YOU THINK of Taylor and Sam’s duet?