Rumours are rife over a possible reunion between Rihanna and her ex-boyfriend Chris Brown.

The pair were recently spotted partying in a Hollywood club. The Daily Star reports that they enjoyed a night-out together at Hollywood's Greystone Manor.

Brown, 22, and the R&B singer, 23, split up more than two years ago after a violent relationship.

Rihanna was allegedly beaten up by Brown and pictures of a badly bruised Rihanna were revealed in the media. Brown was subsequently handed five years' probation and six months' community service, along with a restraining order.

Later on, Rihanna herself went to the court seeking to relax the restraining order, the report added.

Also, there were some Twitter exchanges between Rihanna and Brown last month which suggested a possible reunion.