Russell Brand has been mistaken for a lookalike of himself.

The 'Get Him to the Greek' star - who is set to wed brunette bombshell Katy Perry in the autumn - was recently spotted by an eager fan outside a Los Angeles eatery, who mistook him for a Brand impersonator.

An onlooker told National Enquirer magazine: "She rushed up and babbled, 'Wow, you look so much like Russell Brand, you could get work as a Russell Brand impersonator.' "

However, the British funnyman was not fazed and when he realised the fan really hadn't recognised him, he decided to have a joke and play along.

He said: "Actually, that's how I support myself."

The quirky actor and presenter then grabbed his beard and declared: "This is a wig!"

The eyewitness revealed the fan was then shocked when 'California Gurls' hitmaker Katy pulled up in her car and the pair sped off.

Russell, 35, is reportedly being lined up to host his own radio show in America, with satellite station Sirius Radio said to be offering the star a contract "worth millions of dollars" to hit the airwaves.

A source close to the star - who has hosted several shows on UK radio stations - revealed: "Russell has been itching to get back on radio for a while now. He has been off doing other things but radio still really tickles him.

"Russell's sidekick Matt Morgan is also keen to get writing and broadcasting again. The Sirius deal is in its infancy but Russell is well up for it. He has been given the hard sell about how they could make him the new Howard Stern."