David Hasselhoff cheeky girlfriend Hayley Roberts posts bikini bottoms down pic on Twitter

London: David Hasselhoff's girlfriend has posted a series of cheeky holiday snaps on Twitter- including one of her pulling her bikini bottoms down.

According to the Sun.co.uk report, the revealing pics show pretty blonde Hayley Roberts posing in a white bikini on the beach and in her room on Necker Island where she was staying with the Hoff.

Hayley and former Britain's Got Talent judge David, 60, jetted away to Richard Branson's private island in the Caribbean last week.

And it appears Welsh beauty Hayley, 32, enjoyed every moment of her exotic getaway.

She was seen taking a dip in the crystal clear water, resting on a tree branch and lounging on a sofa in her suite.

The former Debenhams worker also added a snap of a written message on the ground, saying "David and Hayley."

And she uploaded the pic of her behind, which she captioned: "My butt is not perfect it has a crack in it."

Hayley also added an image of the resort and revealed: "This is necker island I am so lucky to have been able to go there @richardbranson leads an amazing life."

Hayley has been dating David since early 2011 after meeting him in a hotel bar in Cardiff.