Anyone who's spent five minutes watching the 'Ellen DeGeneres Show' knows how fond the TV host is of dancing, so of course she's dancing in the streets to celebrate her upcoming gig as host of March's Academy Awards.
Looking festive in an ankle-length red dress, Katy Perry appeared on 'Ellen,' with holiday sweater-wearing BF John Mayer, who admitted to being in end-of-year, cozy mode.