Joan Smalls and Her Sister Look Hot as the Stars of the New Balmain Campaign

Joan Smalls and her sister Erika have been chosen by Balmain designer Olivier Rousteing to star in his sisters campaign showcasing the brand's Fall/Winter 2015 collection. Erika, who is a social entrepreneur, is not usually in front of the camera or walking the runway like her sister, but it takes just one quick look at the picture above to know that great modeling genes run in the Smalls family; both Puerto Rican beauties look totally natural and comfortable — not to mention supersexy and fierce.

Joan showed her excitement for the ad on her Twitter, saying: "Smalls Sisters Attack @Balmain @ORousteing Huge Thanks this is Epic. I have goosebumps, so beautiful @_ErikaSmalls." Erika chose Instagram to say, "there are no words to describe how I feel right now. Can't stop smiling, dancing & hi-fiving [sic] random people. It was a pleasure and memorable experience working with everyone on set! I am deeply grateful for this opportunity." The pair is in good company with other ads for the campaign featuring Gigi and Bella Hadid and Kendall and Kylie Jenner.