Keira Knightley at Begin Again Premiere

Photo by Marion Curtis from Starpix.

Who: Keira Knightley

Where: The after party for the New York premiere of her new film "Begin Again."

When: Wednesday, June 25th

What: A brocade Erdem dress from Fall 2014.

Why: Knightley pulls off romantic wood nymph chic like no one else.