Notable Role: Hushpuppy in Beasts of the Southern Wild (2012)
Wallis was only five when she landed the role of Hushpuppy, which made her the youngest Academy Award Best Actress nominee of all time, at age nine. To put it in perspective, she was the first person born in the 21st century to earn a nomination. Now, don't you feel old and unaccomplished?
But the starlet isn't just a one-hit wonder that some child stars turn out to be. The actress will appear as the title character in the new film adaptation of Annie, and she's already starring in Steve McQueen's upcoming movie 12 Years a Slave.