A WORLDWIDE PHENOMENON The Sports Illustrated Swimsuit Issue has captured imaginations for 50 years with its annual celebration of the world's most exquisite bodies. From cover girls Christie Brinkley to Heidi Klum to Kate Upton, this yearly publishing sensation has launched the careers of so many supermodels. Elle, Tyra and Brooklyn have become household names. In Swimsuit: 50 Years of Beautiful, SI reveals...