Thomasin McKenzie was 13 in The Hobbit: The Battle of the Five Armies when she played the character 'Astrid'.
That was over 9 years ago in 2014.
Today she is 23, and has starred in 18 movies in total, 13 of those since The Hobbit: The Battle of the Five Armies was released.
In The Hobbit: The Battle of the Five Armies, I think Thomasin McKenzie looks: