H&M has unveiled its Holiday 2015 campaign, featuring Firework hitmaker Katy Perry, who appears in photos showcasing looks from the high street brand's latest collection.

The soundtrack to the ad is Every Day Is A Holiday, a new song written by Perry and produced by Duke Dumont. Perry, who was first announced as the face of the campaign in July this year, commented 'H&M has been a part of the evolution of my personal style since I was 13, when I would start to incorporate fun, affordable H&M pieces into my vintage wardrobe. I can't wait for you to give your wardrobe some sparkle with this magical holiday collection'.