She was held up as the poster girl for the Size Zero trend, but it seems that Nicole Richie's pregnancy has given her formerly rail-thin frame some womanly curves.

Last December, the 25-year-old - who is 5ft 1in tall - told police officers who pulled her over for a driving offence that she weighed just 6st 1lb.

However pictured on holiday in Hawaii with her fiance, heavily tattooed rock musician Joel Madden, Richie appeared much more healthily rounded.

 Nicole Richie is five months pregnant

The extent of her new found body confidence was apparent from her choice of bikini.

A tiny top with tie-side bottoms would be a brave choice for any woman, never mind one who is five months pregnant.