London Tonight will be live on the red carpet at the European premier of Katy's Perry's new film later.
Katy Perry: Part of Me 3D is being described as "a rare glimpse into the pop sensation's life behind the cameras.....a backstage pass, front row seat and intimate look at the fun, glamorous, heartbreaking, inspiring, crazy, magical, passionate, and honest mad diary of Katy."
Join us at 6pm to see Katy chatting to our Entertainment Correspondent Lucrezia Millarini.
Fans have been camped out overnight in Leicester Square for the world premiere of Snow White and the Huntsman. The movie, which stars stars Kristen Stewart, Charlize Theron, and Chris Hemsworth puts a new twist on the classic fairytale.
In the original story, the huntsman is sent by the Evil Queen to kill Snow White but, upon meeting her, has a change in heart. In this film, director Rupert Sanders will go one step further by having the huntsman train Snow White to survive and fight back.