The 2013 Sports Illustrated Swimsuit edition will be the magazine's 50th edition and while the mag pretends that sports are its primary purpose in life, it's annual bikini madness display is far and away it's most epic and financially rewarding annual undertaking. Which is why nine months in advance of its release, shoots are already underway for the magazine's annual winter time two-piece testament to hot warm tanned bodies, and you can bet that testament will include Kate Upton.
In fact, we now know it does, as Kate blessed us with Twitpics from on the set of her S.I. shoot, providing some very early, extremely sextastic views of all good things to come. As you can see, the sextastic is already getting very hands on. Oh, to be an inner tube on that photo shoot, let alone the lucky bastard with his paw on Kate Upton's asstastic. Devastating. Enjoy.