Georgie Henley was 9 in The Chronicles of Narnia: The Lion, the Witch and the Wardrobe when she played the character 'Lucy Pevensie'.
That was over 18 years ago in 2005.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 28, and has starred in 7 movies in total, 6 of those since The Chronicles of Narnia: The Lion, the Witch and the Wardrobe was released.
In The Chronicles of Narnia: The Lion, the Witch and the Wardrobe, I think Georgie Henley looks: