The 2014 Sports Illustrated Swimsuit issue has not one but three cover girls -- Lily Aldridge, Chrissy Teigen and Nina Agdal.

The models appear topless wearing only thong bikini bottoms, standing in the ocean.

The 50th anniversary of the swimsuit issue features photos of past cover girls like Christie Brinkley and Heidi Klum, as well as the current cover girls and a "rookie class" of models representing the future.

The issue hits newsstands on Tuesday.

The last time the SI Swimsuit cover featured three women—Rachel Hunter, Elle MacPherson, and Kathy Ireland—was in 1994.