Former Olympic athlete and reality TV star Bruce Jenner, who is transitioning to life as a woman, revealed her new name as Caitlyn Jenner on Monday. Caitlyn posed in a white strapless leotard on the cover of Vanity Fair magazine. After tweeting a picture of the magazine cover, Caitlyn’s Twitter account became the fastest account to reach 1 million followers. According to Guinness World Records, it only took four hours and three minutes–besting U.S. President Barack Obama. The cover portrait, by renowned photographer Annie Leibovitz, was taken in Jenner’s Malibu, California home for Vanity Fair’s July issue. In one image, she takes the wheel of a black sports car wearing a tight crimson dress. In another, she wears a lacy corset under a motorcycle jacket.