Katy Perry reveals new Christmas song for festive ad campaign!
The Pogues, Wham, Slade... and Katy Perry?!
Katy Perry has revealed her debut Christmas tune 'Every Day is a Holiday'!
As part of the H&M 'Happy & Merry' festive ad campaign, Katy has teamed up with British DJ Duke Dumont to collaborate on the song.
Will it be up there with the best Christmas songs ever... or is it another 'Proper Chrimbo'?!
Check out the advert and song below!