News Awards & Events Film Festivals Cannes Film Festival Jessica Chastain's Stylist on Her Cannes Fashion: 'It's a Science' By InStyle Editors InStyle Editors Instagram Twitter InStyle's mantra is "Everybody's in," and that means anyone who finds their way to our stories should find themselves reflected in them. We prioritize bringing the right writer to every story and sometimes collaborate as a team to ensure we're including points of view across race, gender expression, body size, skin and hair type, and more. Our editors and writers comprise decades of expertise across the beauty, fashion, lifestyle and wellness spaces in print and digital. We prioritize journalistic integrity, factual accuracy, and also having fun with every story we share. For more about our team, click here. InStyle's editorial guidelines Published on May 28, 2012 Pin Share Tweet Email Photo: BEImages; Wireimage; FameFlynet Stylist Elizabeth Stewart had a big job this week—dressing Jessica Chastain for the Cannes Film Festival. "We have it down to a science," the stylist told InStyle.com of the process at the ninth annual PS Arts fundraiser in Beverly Hills this week. "We’ve planned everything out beforehand. It's like a military operation. We photograph everything. We send a PDF. There's a printed and e-mailed copy. It's pretty organized." As for how she got her hands on so many beautiful gowns—Armani, Dolce & Gabbana, Alexander McQueen included—it's also very methodical. "When you dress a girl like that, you have the world at your fingertips," said Stewart. "Everybody wants to dress her." See Stewart's Cannes fashion show for Jessica Chastain in the gallery. — Violet Gaynor and Lindzi Scharf Was this page helpful? Thanks for your feedback! Tell us why! Other Submit