Katy devastated as Russell Brand unveils new girl

Katy Perry is said to be sad after her ex Russell Brand started dating a new girl. Photo / NZ Herald

Russell Brand has reportedly grown close to another woman.

The British actor announced he was separating from his pop star wife Katy Perry just three weeks ago.

But Us Weekly reports that the comedian has already found someone special.

"[Brand] told her he wanted her to move in with him after the divorce is final," a source told the publication.

But Perry is said to be upset that Brand has moved on so quickly and is hurt by the allegations.

"She discovered through friends," the insider added.

''[A] woman told a friend of hers, and it got back to Katy. It's gotten ugly. Katy doubts she'll ever be able to trust a guy again.''

Brand filed papers on December 30 to end his 14-month marriage to the Firework singer citing "irreconcilable differences".

Although Perry has remained largely tight-lipped about the split she did post a message on her Twitter page to her followers.

"I am so grateful for all the love and support I've had from people around the world,'' she wrote. "You guys have made my heart happy again."

- AAP