Tonight, superstar Katy Perry invites Perez to have an exclusive peak behind the scenes of her latest video for new single “The One That Got Away.” He then joins the pop superstar on her UK tour and is treated to exclusive access to her closed set. The pair also get up close and personal discussing topics ranging from her husband Russell Brand, her early Christian music career and her love of touring.

Perez Hilton said: ""I have known Katy very well for over 4years now, and I'm very excited, pleased and proud to be able to show ITV2 viewers the Katy I know! Raw, real and funny - we go behind the glitz and the glamour of being a global superstar and get to the heart of this California girl. And, of course, we talk a lot about Russell Brand! It's a MUST-watch interview!"