Rupert Grint was 14 in Harry Potter and the Prisoner of Azkaban when he played the character 'Ron Weasley'.
That was over 20 years ago in 2004.
Today he is 35, and has starred in 24 movies in total, 19 of those since Harry Potter and the Prisoner of Azkaban was released.
In Harry Potter and the Prisoner of Azkaban, I think Rupert Grint looks: