Liv Tyler was 24 in The Lord of the Rings: The Two Towers when she played the character 'Arwen'.
That was over 21 years ago in 2002.
Today she is 46, and has starred in 36 movies in total, 18 of those since The Lord of the Rings: The Two Towers was released.
In The Lord of the Rings: The Two Towers, I think Liv Tyler looks: