how old was judy garland in wizard of oz

Judy Garland was born on June 10, 1922. The Wizard of Oz was released in 1939, so she was 16 or 17 years old during filming and release, depending on the exact filming dates relative to her birthday. She played the character Dorothy, who was aged down in the film's story from the book's original age to about 12, though Garland herself was a teenager at the time.