Katy Perry has been using her time in the UK wisely, appearing on some of our biggest TV shows and national radio stations.

The California Gurls singer was spotted leaving the Radio 1 building in London wearing a gorgeous polka dot dress and peep toe heels.

Katy is still wearing the West Ham inspired hair extensions, a possible nod to her future husband, comedian Russell Brand.

Katy's been super busy promoting her new album and single Teenage Dream which are out now and we're addicted!

We can't get enough of Katy's promo wardrobe!