Washington, Feb 28 : American actor Robert Downey Jr. has given credit to Coldplay frontman Chris Martin for his recent weight loss in the upcoming movie Sherlock Holmes.

Downey Jr., 43, is currently filming scenes as the fictional detective in a new big-screen adaptation by director Guy Ritchie, and he has had to slim down considerably for the role.

The Iron Man star says that every time he is tempted to have a snack, he remembers Martin's advice.

Washington, Feb 25 : American actor Robert Downey Jr. has revealed that he is writing a stage musical.

The Iron Man star has said he has been working on the project for a number of years, and is tirelessly trying to get it finished.

"I''m a little busy right now. Every two years or so I''m saying that I am going to do a big musical; I''m just tired of saying that I am going to do stuff that sounds cool. If I''m going to do something, I''m going to do it," Contactmusic quoted him as saying.

London, Feb 5 : Hollywood actor Robert Downey Jr. has dismissed reports that Mickey Rourke has been roped in to play his nemesis in the upcoming Iron Man sequel.

Downey Jr., who played the lead role of tycoon-turned-superhero Tony Stark in the 2008 comic book movie, will reprise his role.

He insists reports that `The Wrestler' star has already signed up to play comic book villain Crimson Dynamo are `false'.

"That''s actually incorrect," the Daily Express quoted him as telling MTV.

However, he refused to confirm Rourke is in negotiations to play another character, Whiplash.

London, Jan 30 : Robert Downey Jr. has revealed that he initially turned down his Oscar-nominated role in `Tropic Thunder' - because he feared he would be `crucified' for portraying a black man on screen.

The white `Iron Man' star has received the Best Supporting Actor nomination for his role as Kirk Lazarus, an Australian method actor who undergoes an operation to darken his skin in order to play an African-American character.

London, Jan 24 : Hollywood actor Robert Downey Jr. loves to ''Googling'' himself on the web - so that he can know what people are saying about him.

When `grilled' by Newsweek about his online habits, the `Only You' actor revealed that he is addicted to Googling.

Robert revealed that he finds it incredibly entertaining to see chatrooms dedicated to him.