By Martha Zaytoun When Jennifer Atilémile stepped onto the set of her SI Swimsuit photoshoot, she was unknowingly experiencing “a defining moment in [her] career,” as she referred to it in an Instagram post afterward. She traveled to Puerto Rico with photographer Derek Kettela for a unique, denim-inspired photoshoot that had her posing in the most fabulous washed blue swimsuits. The Australian-French model made the most of the experience, too. While far from her first modeling experience—she began her career at 25, and soon after became Victoria’s Secret’s first Australian curve model—it was a…