That was over 33 years ago in 1988.
Today he is 74, and has starred in 88 movies in total, 63 since Twins was released.
In Twins, I think Arnold Schwarzenegger looks:
Twins scores 5.7 out of 10 on The Movie Database.
Arnold Schwarzenegger's first acting role was as 'Hercules' in Hercules in New York, released in 1969 when he was 21.