Even though Richie publicly fell out with Zoe over claims both women were promoting an unhealthy body image to young girls, it seems she has held on to her trademark bug-eyed sunglasses.

As a further protection against the heat - and perhaps mindful that long periods of sunbathing are not recommended for pregnant women - Richie soon retreated under a canvas awning.

Earlier Nicole was seen in a red bikini relaxing on the beach in Hawaii

Friends of Richie, who gained notoriety from her appearance in reality show The Simple Life with Paris Hilton, hope that her relationship with Madden and impending parenthood will help her settle down.

The troubled star previously suffered a slide into drugs and driving-related offences which saw her spend a short time in prison.