Holly Madison and Kendra Wilkinson, who both made their names in the Playboy reality series Girls Next Door, both slipped into swimsuits for separate promotional appearances in Las Vegas yesterday.

Clearly both schooled in the tricky business of poolside posing, they showed off matching moves as they each lounged in front of the camera.

Madison was flying the flag on July 4 in a red string bikini at a pool party at the MGM Grand Hotel and Casino.

The 30-year-old now stars in her own E! series Holly's World, which followed her move to Vegas to appear in the stage production, Peep Show.

The blonde, who was 84-year-old Hefner's 'Number 1' girl for a time, is also on the look out for love.

'I'm single right now but I would like to find a husband,' says Madison, who has also been linked to rocker Benji Madden and illusionist Criss Angel in recent times.

'The Catch 22, though, is that the kind of guys who want to be on my show are not the type of guys I want.'

Meanwhile, her former co-star Kendra was in Sin City over the holiday weekend to promote the Moorea Beach Club at Las Vegas's Mandalay Bay Hotel and Casino.

The 25-year-old, who gave birth to son Hank last December, showed off her post-baby body in a striped cut-out one-piece number.

The 25-year-old has made no secret of her struggle to lose her baby weight, but says she is determined to get back into shape for her husband.

‘It's all because of Hank [American football player Hank Baskett]. He's the one I am doing it for,' she says.

'It's not even for me being on the cover of magazines or on a TV show. I want my body back for Hank!’

The star, who was embroiled in a sex tape scandal earlier this year, also appears in her own spin-off show, Kendra.

The former co-star's keep in touch though, with Holly recently revealing: 'We see each other a lot.'