Pamela Anderson was 22 in Playboy Video Playmate Calendar 1991 when she played the character 'Miss July'.
That was over 34 years ago in 1990.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 56, and has starred in 51 movies in total, 50 of those since Playboy Video Playmate Calendar 1991 was released.
In Playboy Video Playmate Calendar 1991, I think Pamela Anderson looks: