Katy Perry collaborates with Kanye West

(image) Los Angeles: After her chart-topping collaboration with Snoop Dogg, pop star Katy Perry has joined forces with another rap superstar, Kanye West, for her new single “ET“.

“California Gurls“, her song with Snoop became a hit and Perry has added West“s verses in the radio version of her new single, though she goes solo in the album.

To top it all, Perry has invited the “Stronger“ hitmaker to join her in the song“s music video, reported Ace Showbiz online.

A behind-the-scene picture of the video shoot has gone viral. The image shows Perry dressed as a imaginary alien.

In the photograph the 26-year-old singer is wearing white-red-and-blue make-up with a silver headpiece and posing next to Kanye who dresses casually in a black jacket.