Emily Mortimer was 22 in Sharpe's Sword when she played the character 'Lass'.
That was over 29 years ago in 1995.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 52, and has starred in 58 movies in total, 56 of those since Sharpe's Sword was released.
In Sharpe's Sword, I think Emily Mortimer looks: