That was over 35 years ago in 1986.
Today he is 78, and has starred in 76 movies in total, 59 since ¡Three Amigos! was released.
In ¡Three Amigos!, I think Chevy Chase looks:
¡Three Amigos! scores 6.2 out of 10 on The Movie Database.
Chevy Chase's first acting role was as 'Various' in Lemmings, released in 1973 when he was 29.