Ian McDiarmid was 53 in Star Wars: Episode I - The Phantom Menace when he played the character 'Senator Palpatine'.
That was over 24 years ago in 1999.
Today he is 78, and has starred in 36 movies in total, 19 of those since Star Wars: Episode I - The Phantom Menace was released.
In Star Wars: Episode I - The Phantom Menace, I think Ian McDiarmid looks: