What are the sexiest Sports Illustrated Swimsuit covers? They all feature hot models in swimsuits, so how can you possibly choose a favorite? Whether it’s newer names like Heidi Klum, Chrissy Teigen, Tyra Banks and Kate Upton, or more classic beauties like Christie Brinkley, Kathy Ireland and Cheryl Tiegs, they’re all beautiful SI cover models. WatchMojo looks at ten of the hottest Sports Illustrated Swimsuit covers from over the years to help you pick your fave.