Keeley Hawes was 19 in The Moonstone when she played the character 'Rachel Verinder'.
That was over 27 years ago in 1996.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 48, and has starred in 33 movies in total, 32 of those since The Moonstone was released.
In The Moonstone, I think Keeley Hawes looks: