Richie ring sparks wedding rumours

Nicole Richie has ignited reports she is to wed boyfriend Joel Madden after she was spotted at a Hollywood party wearing a large diamond sparkler on her ring finger.

The 'Simple Life' star has so far refused to confirm or deny recent US reports of a rumoured pregnancy, prompted by pictures of the skinny star with a bloated belly.

Now the Good Charlotte rocker - who accompanied Richie to the YSL Pool Party at the Beverly Hills Hotel on Thursday night - appears to have proposed to his lover.

An eyewitness told the New York Post newspaper's gossip column Page Six: "It was one big rock surrounded by more diamonds.

"(Madden was) overly attentive to her - keeping his arm around her all night - and repeatedly asked her if she was OK."