Emma watson attend the world premiere of "Harry Potter and the Half Blood Prince" held at the Odeon Leicester Square on 7 July 2009 in London

LONDON, ENGLAND - JULY 07: (L-R) Rupert Grint, Emma Watson and Daniel Radcliffe attend the world premiere of 'Harry Potter and the Half Blood Prince' held at the Odeon Leicester Square on July 7, 2009 in London, England.

Photo by: Dave Hogan/Getty Image