Tina Fey was 28 in Saturday Night Live: 25th Anniversary Special when she played the character 'Self (uncredited)'.
That was over 25 years ago in 1999.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 54, and has starred in 41 movies in total, 39 of those since Saturday Night Live: 25th Anniversary Special was released.
In Saturday Night Live: 25th Anniversary Special, I think Tina Fey looks: