Most celebrities are used to the warm and sunny Hollywood weather, but for a week in January, the stars brave the cold in Park City, Utah for the Sundance Film Festival!

Big names like Kate Bosworth, Laura Prepon, Emily Blunt and James Marsden (among many others) hit the snowy city to check out some of the films -- and also show off their winter fashion. Prepon rocked one of the most unique and interesting looks of the week in a black, animal-inspired, hooded, fur-lined jacket. Considering she was all smiles, I think it's safe to say the coat did the trick in keeping her warm! Marsden was warm enough to roll up the sleeves of his red and white plaid shirt, but he added a blue, unzippered, vest to brave the weather.

James Marsden & Laura Prepon at the Sundance FIlm Festival

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Tons of couples were strolling around the city and it looks like PDA wasn't enough to keep them warm! Blunt and her love John Krasinski went matchy-matchy in black jackets and jeans, although Blunt went for a lenghtier pea coat. Bosworth also went for a black coat while snuggling up to her man Michael Polish, who buttoned his navy pea coat tight. AnnaLynne McCord kept her jacket unbuttoned, but opted for a purple hat alongside her much older beau Dominic Purcell.

Emily Blunt & John Krasinski, Kate Bosworth & Michael Polish and Dominic Purcell & AnnaLynne McCord at the Sundance Film Festival

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If you haven't gotten enough bundled-up looks, make sure to scroll through the gallery and check out what ALL the stars at Sundance did to stay warm. And of course I have to know -- what is your favorite tip for looking stylish while going out in the cold!?

Photos Courtesy of: Fame Pictures & Pacific Coast News