Lady GaGa & Tony Bennett Dance Cheek To Cheek At The Grammys! Watch Their Duet HERE!

Lady GaGa and Tony Bennett worked their collab all the way to the Grammys.

The two took to the stage to sing the Irving Berlin classic Cheek To Cheek, and it was total old school.

Tony still wears the heck out of a tux, and GaGa showed off curves in a black dress.

Ch-ch-check out the video (above) to see the duo.

Feb 8, 2015 10:31pm PDT

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