Kate Upton Is Topless On Sports Illustrated's Body-Diversity Swimsuit Issue Cover

    It's the most boobiest time of the year...

    Rejoice! The Sports Illustrated swimsuit issue is here. And Kate Upton is back on its illustrious cover.

    This time, she's got not one but three covers.

    The theme of this issue? Celebrating "body diversity and age inclusion."

    The mag also features shots of tennis pro Serena Williams...

    ...model Ashley Graham...

    ...and supermodel Christie Brinkley with her daughters Alexa and Sailor.

    Another new addition? Model Hunter McGrady, who wrote on Instagram, "I have never felt sexier than I did in this shoot."

    The full issue is on newsstands now.