If you need a foolproof method to staying warm during chilly, chilly Sundance, look no further than The Spectacular Now's Shailene Woodley.
Step one: Borrow the boots of a man who just returned from plowing snow. Step two: Select pants that offer enough room to wear a second pair of pants underneath (note: those may or may not be overalls). Step three: Choose a scarf so big that you could wrap it around your entire body for extra warmth. Step four: Opt for a giant fur-paneled coat with thick leather sleeves (faux fur and pleather work too). And finally, step five: Ask your grandma to knit you an adorable hat for the occasion.
And there you have it folks. Though we do recommend having a plan to combat the effects of extreme overheating. And hat head.