Ben Barnes was 25 in The Chronicles of Narnia: Prince Caspian when he played the character 'Prince Caspian'.
That was over 16 years ago in 2008.
Today he is 42, and has starred in 18 movies in total, 14 of those since The Chronicles of Narnia: Prince Caspian was released.
In The Chronicles of Narnia: Prince Caspian, I think Ben Barnes looks: