All the Reasons Lily James Is a Bona Fide Fashion It Girl

Lily looked picture-perfect in Marchesa at the 2016 Golden Globe Awards.

Her elegant icy-blue Prada number was complete with shimmering embellishments that Lily played up with sparkly drop earrings at the Mexico City premiere of Cinderella in March 2015.

For the February 2016 London premiere of Pride and Prejudice and Zombies, Lily selected a cold-shoulder dress from Erdem.

In March 2015, Lily's look was all about the details, from the rows of buttons and silk-paneled sleeves on her Dior dress to her scarlet Aquazzura heels.

Her structured Balenciaga metallic column dress was the perfect mix of silver and gold back in March 2015.

Lily wore a powder-blue Mary Katrantzou dress to a Berlin photocall in February 2015.

Lily turned heads when she made a dressed-down, festival-appropriate appearance at Glastonbury in June 2015.

The actress switched things up for a New York City screening of Cinderella in March 2015, opting for a long-sleeved leather jacquard mini from Dolce & Gabbana.

She completed her satin long-sleeved mini, which is from Mugler's Spring '15 collection, with strappy sandals.

Lily wore a belted Ralph Lauren shirtdress to a soiree at Wimbledon in June 2015.

For a February 2015 event in Milan, the actress rocked a red halter dress from Gucci's Spring 2015 collection, completing her look with strappy Christian Louboutin Viennana sandals.

She completed her sleek two-piece Camilla and Marc set with metallic sandals at the AOL Build Speaker Series in March 2015.

Lily paired her Spring '15 floral Erdem dress with Jimmy Choo Elsa sandals in Milan in February 2015.

She completed an embellished leather top with loose, lightweight trousers, peep-toe pumps, and a wool coat on her way to BBC Radio in London in March 2015.

She completed her March 2015 Dior look with rose-embellished heels.

Lily looked radiant at the January 2016 premiere of Pride and Prejudice and Zombies in Alexander McQueen.

Wearing a pretty off-the-shoulder dress, Lily struck a pose at the Claridge's Christmas Party in December 2015.

For a Cinderella press conference in Tokyo in April 2015, Lily chose Valentino's cosmic-print dress, completing her look with beige and gold T-strap pumps.