Vince Vaughn was 20 in For the Boys when he played the character 'Cheering Soldier in Crowd (uncredited)'.
That was over 32 years ago in 1991.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 54, and has starred in 67 movies in total, 64 of those since For the Boys was released.
In For the Boys, I think Vince Vaughn looks: