The actor stopped by Live with Kelly and Michael Wednesday morning to sing some Christmas karaoke dressed in the holiday-inspired sleepwear.
Battling it out with co-host Michael Strahan, The Rock sang his own rendition of “Here Comes Santa Claus” as co-host Kelly Ripa – and even Strahan – rocked out on the couch decked out in their festive attire.
The best part of his performance? When he screamed, “I’m in a onesie!” mid-song.
Watch him in action in the video above.