Kate Upton sizzles in her second straight year as Sports Illustrated's Swimsuit Issue cover model Upton graces the cover for the magazine's hotly anticipated 50th Anniversary edition. With the headline 'Polar Bare,' Upton is shown in Antarctica sporting an unzipped jacket and wearing a bikini bottom. 
 
 Shown is the February 2013 Sports Ilustrated Swimsuit cover featuring model Kate Upton, as found on the SI Swimsuit Twitter feed 
 
 The secret is blown. 
 
 Sports Illustrated had planned to reveal its eagerly anticipated 2013 Swimsuit Issue on Monday - but an image of the supposedly top secret cover was leaked onto the Internet three days earlier. The magazine took to twitter to confirm the front page 
 
 PHOTOS: KATE UPTON: CURVES AHEAD 
 
 WALTER IOOSS JR/SPORTS ILLUSTRATED via AP 
 
 The photo, which first surfaced on Fashioncopious.com, revealed that 2012 cover girl Kate Upton graces the Swimsuit issue for a second year in a row. 
 
 This year’s cover - the 50th anniversary issue - looks to be one for the ages. With the coverline, “Polar bare,” it features Upton clad in white bikini bottoms and an matching parka that’s opened up to expose most of her curvacious body to the Artic chill. 
 
 The 20-year-old model endured frigid temperatures of 35 below zero for the Antartica shoot , TMZ reported when the gossip site posted photos in December . 
 
 It ended up being quite an expedition: Upton and a camera crew sailed on a ten day cruise that disembarked from Argentina to find the picture perfect background for the milestone issue. ||||| Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period. ||||| Kate Upton Strips for Antarctic Photo Shoot 35 Degrees BELOW ZERO 
 
 Kate Upton Strips for Antarctic Photo Shoot -- 35 Degrees BELOW ZERO 
 
 EXCLUSIVE 
 
 andhave something in common ... because Kate's assets were FROZEN recently -- when the curvaceous 20-year-old model stripped down to her skivvies for an Antarctica photo shoot ... where the temperature hit 35 BELOW!!!We're told Upton and a camera crew boarded a private 10-day cruise from Argentina to Antarctica for a super-secretcover shoot. The cruise departed November 29th and returned December 9th.The photos were shot both on the cruise -- with massive icebergs as a backdrop -- as well as on the penguin-filled islands off the coast of the frozen continent.But don't worry -- we're told Upton only stripped to a bikini for a few minutes at a time ... and was otherwise wrapped in a pimpalicious fur coat.As for the giant Oreo man -- 2012 marks the 100th year since the inception of the tastiest cookie in the universe ... and for some reason, this guy felt like celebrating.Lucky for him, Kate's got enough milk to go around. ||||| Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
– For the second year running, Kate Upton graces the cover of the Sports Illustrated swimsuit issue. And this year, the apparently sadistic SI bosses thought it would be fun to make the 20-year-old stand, in bikini bottoms and an unzipped jacket, in icy Antarctica for the cover shoot. Upton was "very, very sick" upon her return home to Florida, she tells the AP. "I don't think you can go to Antarctica and stand in a bikini without that happening. But I didn't die, and I'm OK now." TMZ reported back in December that the temperature was 35 degrees below zero. The magazine—the 50th-anniversary issue—hit newsstands today, after being officially unveiled last night on the Late Show With David Letterman. But the cover had been leaked three days earlier, the New York Daily News reports. Inside the magazine, the fashion shoot captures 17 swimsuit models on all seven continents—and a less-clad Upton. Out of a dozen or so photos in which she appears, that cover shot "is the most clothes I'm wearing in the whole issue," she says. "It was a sort of I-love-you from the editor: 'I'll let you wear a coat for this one.'"