Charlie Sheen has divorced his wife Brooke Mueller after just two years, making this the star's third failed marriage.

The couple separated around Christmas time last year, after Sheen allegedly assaulted Mueller.

The pair, who have twin boys, were thought to be trying to fix their marriage, but it would seem they have decided to part ways.

Celebrity website TMZ claims to have obtained the Hollywood couple's divorce documents. They allege that Mueller, 32, will receive $55,000 a month in child support and will have primary custody of the boys.

Sheen, star of the hit TV series Two And a Half Men, also has two daughter with actress Denise Richards, and according to the website, the divorce documents state that 'under no circumstances shall the child support paid by Charlie for Bob and Max, be less than the child support paid by Charlie to Denise Richards for Sam and Lola'.

The actor has just signed a deal to return to the sitcom for another two years at a reported $1.78 million per episode.