Aidan Turner was 29 in The Hobbit: The Desolation of Smaug when he played the character 'Kili'.
That was over 10 years ago in 2013.
Today he is 40, and has starred in 12 movies in total, 6 of those since The Hobbit: The Desolation of Smaug was released.
In The Hobbit: The Desolation of Smaug, I think Aidan Turner looks: