One thing Jodie Foster touched on in her long and memorable Golden Globes speech was how difficult it has been for her to be in the public eye, working, since a very young age.
"I have given everything out there, from the time I was three years old," she said.
She's not the only one. From Shirley Temple to the Olsen twins, some of our most beloved Hollywood stars were practicing scripts before they had even mastered the art of the sippy cup.
So just how young did your favorite actress take her first walk, or crawl, in front of the camera? Take a quick trip down memory lane with our slideshow of 12 Hollywood stars who began acting before the age of four.