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Kate Upton, American model and two-time Sports Illustrated Swimsuit Issue cover girl (2012 2013) is not featured on the 2014 edition’s front cover. However, if you flip the magazine to the back cover, you’ll see the blonde bombshell in a historical photo-shoot to celebrate the publication’s 50th anniversary as the first SI swimsuit model to pose in zero-gravity. The Zero G Experience — a flight corporation specializing in simulating zero gravity — nose-dives from the sky at a 45-degree angle before reaching an altitude of 34,000 feet in a Boeing 727. The result: the perfect weightless atmosphere for James Macari to photograph Upton’s body in a gold bikini. Check out photos from the shoot above, as well as behind-the-scenes footage from the shoot. The 2014 Sports Illustrated Swimsuit Issue is in stores and online now.