Kim Kardashian shared this photo on Instagram on Thursday after a sunbathing session with Joe Francis' girlfriend Abbey Wilson

Kim Kardashian is currently enjoying a few days of repose in Mexico, and appears to have spent much of it relaxing in the sunshine.

But while working on getting even more bronzed, the reality star is trying her best to ensure her tanlines are even.

Kim went topless for a sunbathing session on Wednesday, and the ever cheeky 33-year-old shared a photo of her scantily clad self the following day.

Bootylicious: Kim Kardashian shared this photo on Instagram on Thursday after a sunbathing session with Joe Francis' girlfriend Abbey Wilson

In the snapshot Kim lies on her front with her raven locks flowing down her back, while showing off that famous derriere in sunshine yellow bikini bottoms.

Lying next to the wife of Kanye West was Abbey Wilson, the pregnant girlfriend of Girls Gone Wild creator Joe Francis.

Kim in fact often holidays at Joe’s beachfront property in Mexico, and it seems she has formed a close friendship with Abbey too.

That's one way to make a splash: The reality star followed it up with a snapshot of her bottom while she was in a swimming pool

Getaway: Kim is currently in Mexico with baby North, staying at Joe's beachfront home. She and Abbey are pictured here with North on Monday

The Keeping Up With The Kardashians star posted the photo to Instagram along with the caption: ‘#OurLovelyLadyLumps.’

In the photo Abbey’s huge baby bump is on display while she sports a grey T-shirt over a pink bikini top and a printed blue mini-skirt.

A little bit later Kim posted another picture in which she was showing off her bottom, this time while taking a dip in the pool.

Famous friends: Abbey and Joe are pictured at Kim's wedding to Kanye West in May. The couple announced in April that they are expecting twin girls after conceiving via IVF so they could choose the gender

Abbey, 26, and 41-year-old Joe announced in April that they are expecting twin girls after using IVF to conceive in order to pick the gender of their children.

'I believe people will finally understand my love, respect and admiration for women. I love girls,' he told Us Weekly to explain their decision.

Abbey added: 'We both wanted girls and we wanted them to be healthy and free of genetic diseases so we chose to do IVF.'

The pair have been dating for two years after Joe was introduced to Abbey when she won Girls Gone Wild's 'Search for the Hottest Girl in America'.  

It's a hard life: Kim has jetted to Mexico after some time back home in LA, and was at Haute Couture Fashion Week last week, where she is pictured at the Valentino show