According to reports, socialite Nicole Richie is pregnant with her first child. Prompted by pictures of the skinny star with a bloated belly, a number of magazines are claiming medical tests have proved The Simple Life star is expecting a baby with her rocker boyfriend Joel Madden of Good Charlotte.

Late last month she was photographed at a reproductive clinic and a report in Life and Style magazine claims blood and urine tests "confirmed she is pregnant".

An "insider" tells the magazine, "Nicole's determined to get healthy for her own sake and the baby's."

A representative for the star has refused to comment on the allegations.

-Nicole Richie Pictures

(This news article provided by World Entertainment News Network)