What age did your favourite actor appear in his first film/tv show?

Rob was 27 when he played in The Paper Chase. no idea how he was looking there

I think he was 24, He played "Bobby" in "Twenty-One" XD

Matthew was4 when he appeared in the 80's show, "Dynasty as Danny Carrington Jr and his first film was Planes, Trains and Automobiles as Neal Page Jr. (pictured) :)

my baby's first movie was Vanity Fair,which came out in 2004,so he was only 18.Unfortunately his scenes were cut out,but the following Jahr he was seen in Harry Potter/Goblet of Fire,and that led to the Twilight saga.The star, sterne of Vanity Fair was Reese Witherspoon,who played his Liebe interest in Water for Elephants<3

Cory Monteith was 22 when he first appeared in a show, Stargate Atlantis.