Alexander Siddig was 23 in A Dangerous Man: Lawrence After Arabia when he played the character 'Prince Feisal'.
That was over 33 years ago in 1990.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 57, and has starred in 32 movies in total, 31 of those since A Dangerous Man: Lawrence After Arabia was released.
In A Dangerous Man: Lawrence After Arabia, I think Alexander Siddig looks: