The curvaceous pair showed off their incredibly toned physiques as they posed in matching yellow bikinis for the ad campaign - that has been causing a stir in the U.K.
Striking poses next to a pool in the sunkissed Hollywood hills, the girls looked flawless as they tried on different bikinis to show off their figures.
Speaking about their new partnership, TOWIE girl Sam confirmed she uses supplements to boost her health and fitness levels.
‘Quality supplementation can leave you feeling fabulous both inside and out. Plus everything tastes amazing,’ Sam, 24, said.
‘I’m very excited to be involved with Protein World.’
Luisa, 27, echoed her sentiment, adding: ‘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!’
And while Sam and Luisa have both made a career out of their bodies, which they keep in shape with regular exercise and a healthy diet, many are objecting to the Protein World campaign they are endorsing.
In fact, one London tube user was so put out by the posters asking ‘Are you beach body ready?’ they wrote a rather curt: ‘F*** off’ on the bottom of the ads.