Having already wowed us in a fairytale Oscar de la Renta gown at world premiere of Harry Potter and the Deathly Hallows part 2, Emma Watson decided a frock swap was in order before hitting the glittering after-party.
The actress swapped into this stunning Elie Saab Couture cocktail dress, which was covered in shimmering textured embellishments, and featured a swing-hem skirt and sheer bodice.