She wears a tiny red-and-brown, sparkle-covered string bikini with a view of the waters of Australia behind her as she poses for the magazine cover, which is scheduled to be unveiled on TV Monday night on "Late Show with David Letterman" on CBS.

The 2012 magazine cover is her second time appearing in the annual SI issue that's the equivalent of the Super Bowl for models. Last year, when Irina Shayk was on the cover, Upton was chosen as rookie of the year.
A huge perk of the job as the official swimsuit model is visiting lovely beaches, including shoots for the magazine in Sydney and Cairns, Australia, and Apalachicola, Fla.
She said living a healthy lifestyle for her includes working out regularly with a personal trainer and watching what she eats. But there's no special diet to prepare for a bikini shoot, she said, and she admits to splurging on the occasional ice cream or plate of fries.
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