Raven-Symoné was 3 in The Earth Day Special when she played the character 'Olivia Kendall'.
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 38, and has starred in 44 movies in total, 43 of those since The Earth Day Special was released.
In The Earth Day Special, I think Raven-Symoné looks: