Maud Adams was 24 in The Boys in the Band when she played the character 'Uncredited'.
That was over 54 years ago in 1970.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 79, and has starred in 55 movies in total, 54 of those since The Boys in the Band was released.
In The Boys in the Band, I think Maud Adams looks: