They formed a close bond after appearing alongside each other during their time Celebrity Big Brother last year.
And Sam Faiers and Luisa Zissman certainly appear to be bosom buddies in a sizzling new fitness campaign.
The stunning pair have teamed up to be ambassadors for supplement giant Protein World.
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Hot, hot, hot: Sam Faiers and Lu! is Zissman have teamed up for sexy shoot to promote their roles as ambassadors for Protein World
Sam, 24, and 27-year-old Luisa, who shot to fame following her stint on The Apprentice, showcase their tanned and toned bodies in a selection of skimpy swimwear.
Former TOWIE beauty Sam sizzles in a zebra print bikini as she poses solo by the pool at a LA mansion, which overlooks the stunning background of the city.
Luisa also displays her famous curves in a revealing white two-piece while wearing heels.
The duo also join forces while wearing matching striking yellow bikinis as they take a dip in the pool.
Healthy: The former TOWIE star showed off her stunning figure in a zebra print bikini
LA LA-land: The 24-year-old looked perfectly at home as she posed by the pool at a home in the Hollywood Hills
Taking charge: The Apprentice star Luisa also showed off her perfectly honed figure in a white bikini, which she teamed with wedges and jewellery
Ready to roll: Luisa insists she's now 'excited for summer' after getting her body in shape with the help of the supplements company
Speaking of her new role as an ambassador for the brand, Sam says: 'I'm very excited to be involved with Protein World. They've taken a leading role in educating a whole new audience that protein based supplements aren't necessarily just for gym bunnies and professional sportspeople.
'Quality supplementation can leave you feeling fabulous both inside and out. Plus everything tastes amazing!'
Luisa adds: 'I love the Slender Blend as a meal replacement or a healthy snack. I've also just discovered that I! can make cupcakes and brownies with a healthy twist!
'Their recipes on the website are brilliant and taste great. I'm looking forward to summer now knowing I'm in great shape.'
Hot stuff: Sam overhauled her health and fitness after being diagnosed with Crohn's disease last year
Fighting fit: The reality TV beauty dramatically changed her diet and even set up her own wellbeing site
Strong: Sam insists she feels better than ever after transforming what she eats and how she works out
Fun times: The pals spent several days in sunny California earlier this year, combining a! girls' holiday with the campaign
Cruising on by: Luisa looked relaxed as she showed off her body while chilling on a lilo for the shoot
Head of Global Marketing at Protein World, Richard Staveley continues: 'We're thrilled to have Sam and Luisa on board as Ambassadors. Both girls perfectly embody the Protein World lifestyle.
'They work hard and play hard and have had exceptional success in achieving their body goals in conjunction with Protein World.
'We're looking forward to working together this spring as we ! all look forward to a healthy and happy summer in the body we love.'
Jumping for joy: Sam and Luisa make the most of the stunning backdrop by leaping into the air as the sun begins to set
The campaign is especially poignant for Sam, who was diagnosed with Crohn's disease during her stint on the Channel 5 reality show.
The 23-year-old's weight plummeted to just over 7st by the time she left the Celebrity Big Brother after she was hit by horrific stomach cramps within minutes of eating ! or drinking anything, which led to being sick or bouts of diarrhoea.
She overhauled her health and fitness regime after her diagnosis, and is now fitter than ever, even launching her own wellbeing site last year.
On top: The pair are said to have struck a £1m deal to promote the brand for 12 months
Source : http://www.dailymail.co.uk/tvshowbiz/article-3056271/Sam-Faiers-Luisa-Zissman-curves-sexy-shoot.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490
