The Elegant Emma Watson

Emma Watson

Emma Watson in Ralph Lauren. Photo by Getty Images.

Who: Emma Watson

Where: The Duke of Cambridge's Royal Marsden dinner at Windsor Castle in England.

When: Tuesday, May 13th

What: A white button-down shirt and light grey draped skirt from Ralph Lauren Fall 2014; a Roger Vivier Boite de Nuit clutch.

Why: No need for a sequined evening dress or ball gown when you can speak elegant volumes with pared down perfection.