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Diesel, Italy

Kristin Cavallari, star of MTV’s "The Hills" and "Laguna Beach," opened up Mercedes-Benz Fashion Week Swim in Diesel’s show.

Cavallari strutted the runway in what the designers called “the world’s first glass bikini.” The denim giant said the bathing suit was inspired by SKYY Vodka’s iconic cobalt blue glass bottle.

Photo: Getty Images