Mary Helen Bowers is a former New York City Ballet ballerina, the woman responsible for training Natalie Portman in Black Swan, and the creator of fitness empire Ballet Beautiful. While many have been watching Mary Helen perform her famous ballet routines in theatres, in studios, or at home, Mary Helen took to Instagram to dance while pregnant with her second child. Any #fitspo obsessed follower knows Mary Helen for adding a little ballet spin to an everyday (sometimes dreaded) workout or pose. Ballet is such a visual form of exercise, which is why Instagram became a natural social-media fit for Mary Helen and her #BalletBeautiful brand.