William Shatner was 52 in Star Trek III: The Search for Spock when he played the character 'Admiral James T. Kirk'.
That was over 40 years ago in 1984.
Today he is 93, and has starred in 181 movies in total, 128 of those since Star Trek III: The Search for Spock was released.
In Star Trek III: The Search for Spock, I think William Shatner looks: