Emma Watson was 21 in The Perks of Being a Wallflower when she played the character 'Sam'.
That was over 12 years ago in 2012.
Today she is 34, and has starred in 27 movies in total, 12 of those since The Perks of Being a Wallflower was released.
In The Perks of Being a Wallflower, I think Emma Watson looks: