who was the youngest person to win an oscar for best supporting actress? who was the youngest person to receive an academy award for best supporting actress? youngest person to get an academy award for best supporting actress? who is the youngest person to receive the academy awards for best supporting actress? who was the youngest to win an oscar for best supporting actress at only 10 years old? who was the youngest supporting actress to win a oscar? youngest person to be awarded oscar for best supporting actress? youngest person to win best supporting actress?