Emma Watson was 13 in Harry Potter and the Prisoner of Azkaban when she played the character 'Hermione Granger'.
That was over 20 years ago in 2004.
Today she is 34, and has starred in 27 movies in total, 23 of those since Harry Potter and the Prisoner of Azkaban was released.
In Harry Potter and the Prisoner of Azkaban, I think Emma Watson looks: