Daniel Deme / WENN
Emma Watson at age 17
Actress Emma Watson poses for a photo at the UK premiere of her film Harry Potter and the Order of the Phoenix. This was at the Odeon Leicester Square in London, England on July 3, 2007. Emma Watson was born on April 15, 1990, so she was 17 years old when this photo was taken. We're no experts on couture, but that medallion at her waist looks very much like an award Harry Potter (or Hermione!) would have received for doing something wonderful.