Cameron Russell, like most fashion models, knows how to pose for the camera, a skill she demonstrated on a recent Friday at the Brooklyn studio of her media consulting company.

Dressed in dark skinny jeans, black hoodie and bright purple socks, Ms. Russell sat on a stool as she communed with the camera lens at a three-quarters pose, arched her back just so and artfully tousled her hair. Her eyes were contoured with bright purple eye shadow, her lips a comical shade of hot pink.

“I feel like I should say something really serious right now,” Ms. Russell said. She lowered her voice an octave and furrowed her brow. “This video is about changing the hetero norms of our society,” she added, before bursting out laughing.

Ms. Russell, 25, has been modeling since she was 16. She has posed for Vogue and Elle, and has walked the runway for Chanel and Versace. Last November, she put on some lingerie and a pair of thigh-high yellow rain boots, and walked in the Victoria’s Secret fashion show.