Paris Hilton has denied she's pregnant after appearing to have a swollen belly in recent pictures.

The heiress and boyfriend Benji Madden were out on Wednesday night in West Hollywood when paparazzi took photos of the couple. In the snaps her loose green dress appears to give her a tummy bump.

Although Hilton has previously mentioned that she would like to have children with the Good Charlotte guitarist next year, her publicist slammed the pregnancy rumours as "completely false".