Bonnie Wright in Miu Miu. (Daniel Deme / EPA)
Helena Bonham Carter in a long emerald gown with a very royal pink hat. (Daniel Deme / EPA)
Imelda Staunton (Daniel Deme / EPA)
Emma Watson in Elie Saab at the after party. (Dominic Lipinski / Associated Press)
Emma Watson (L) and J.K. Rowling, both in Oscar de la Renta. (Dave Hogan / Getty Images)
Anna Wintour , right, in her signature shades. (Ben Stansall / AFP / Getty Images)
Pixie Geldof in a black dress with star details. (Ian Gavan / Getty Images)