Patsy Kensit was 5 in The Great Gatsby when she played the character 'Pamela Buchanan'.
That was over 50 years ago in 1974.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 56, and has starred in 56 movies in total, 54 of those since The Great Gatsby was released.
In The Great Gatsby, I think Patsy Kensit looks: