The 50th Anniversary of the Sports Illustrated Swimsuit Edition (42 images)

Cover Girls Nina Agdal, Lily Aldridge and Chrissy Teigen arrive on the red carpet at the Sports Illustrated Swimsuit 50 Years of Swim in NYC Celebration at the Sports Illustrated Swimsuit Beach House in New York City on February 18, 2014. UPI/John Angelillo

Christie Brinkley arrives on the pink carpet when Barbie Celebrates the 50th Anniversary of the Sports Illustrated Swimsuit in New York City on February 17, 2014. UPI/John Angelillo

Irina Shayk arrives on the pink carpet when Barbie Celebrates the 50th Anniversary of the Sports Illustrated Swimsuit in New York City on February 17, 2014. UPI/John Angelillo

Sports Illustrated Swimsuit Models Natasha Barnard, Emily Ratajkowski, Kate Bock, Emily DiDonato, and Gigi Hadid ring the closing bell at the New York Stock Exchange on Wall Street in New York City on February 13, 2014. UPI/John Angelillo