Miranda Otto was 34 in The Lord of the Rings: The Two Towers when she played the character 'Éowyn'.
That was over 21 years ago in 2002.
Today she is 56, and has starred in 52 movies in total, 29 of those since The Lord of the Rings: The Two Towers was released.
In The Lord of the Rings: The Two Towers, I think Miranda Otto looks: