Erika Eleniak was 11 in E.T. the Extra-Terrestrial when she played the character 'Pretty Girl'.
That was over 42 years ago in 1982.
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 42 movies in total, 41 of those since E.T. the Extra-Terrestrial was released.
In E.T. the Extra-Terrestrial, I think Erika Eleniak looks: