Don't Miss:

At the Sundance Film Festival, we’re catching up with marquee names like Elizabeth Banks and getting to know up-and-comers like Elizabeth Olsen when they stop by the InStyle Portrait Studio at Silver, Park City’s newest hot spot. After telling us about their movies, our guests are treated to pampering lip treatments from Fresh and gifts from jeweler Lia Sophia‘s pop-up shop. And of course, we’re getting plenty of scoop on the cold-weather style essentials the stars are loving this year. “I’m always freezing at this festival,” Dominic Cooper told us. “I’m actually wearing a pair of girl’s thermal tights under my pants right now.” Click through to see exclusive behind-the-scenes photos of all the action at the our Sundance studio.

— Bronwyn Barnes and Karen Levy

Before Julia Roberts could set off to film Eat, Pray, Love, costume designer Michael Dennison had to take a journey of his own. “Fran Vega-Buck (Julia’s personal costumer since 1993′s The Pelican Brief) and I traveled to each of the locations—New York, Rome, India and Bali—to buy clothes and accessories before filming started,” Dennison told us. “And we did it in one week!” After the whirlwind trip, Dennison pulled together more than 100 costumes for the around-the-world shoot. “Each part of the story is associated with a season, but the calendar is backwards,” he explained. “We meet Julia’s character when she’s in an emotional winter, then she begins a journey that takes her through fall, summer and finally to spring, the season of rebirth and renewal. What she wears helps us to see how she’s changing and growing.” Click through our gallery for more photos of Roberts’s Eat, Pray, Love style and get a sneak peek at her sexy co-stars, Javier Bardem and James Franco!