Alicia Witt was 8 in Dune when she played the character 'Alia'.
That was over 39 years ago in 1984.
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 54 movies in total, 53 of those since Dune was released.
In Dune, I think Alicia Witt looks: