Lots of wind during a photo shoot can only mean one thing: wardrobe malfunctions!
The 22-year-old Sports Illustrated supermodel looked super cute while posing in a black and white skirt and a red top. Upton was all smiles as she twirled for the camera. At one point, a gust of wind blew up the back of Upton's dress, revealing her bum! But the wardrobe malfunctions didn't stop there.