Stefanie von Pfetten was 35 in Percy Jackson & the Olympians: The Lightning Thief when she played the character 'Demeter'.
That was over 14 years ago in 2010.
Today she is 50, and has starred in 35 movies in total, 13 of those since Percy Jackson & the Olympians: The Lightning Thief was released.
In Percy Jackson & the Olympians: The Lightning Thief, I think Stefanie von Pfetten looks: