NBC and Time Inc. present "Sports Illustrated Swimsuit: 50 Years of Beautiful," a two-hour TV special celebrating the 50th anniversary of Sports Illustrated's swimsuit edition.

Former swimsuit cover model and "Project Runway" star Heidi Klum will host the special, which features appearances by fellow swimsuit icons Tyra Banks, Christie Brinkley, Kathy Ireland, Marisa Miller, Kate Upton and more!

Check out the preview!

"Sports Illustrated Swimsuit: 50 Years of Beautiful” airs tonight on NBC!