There's a new challenge springing up to raise awareness for an aggressive type of brain tumor that affects young children. The Lemon Face Challenge was started by 11-year-old Aubreigh Nicholas, who was diagnosed with DIPG in September. Her charity, Aubreigh's Army, has already raised more than $40,000 thanks to some help from the sports world such as Alabama head football coach Nick Saban and the Los Angeles Dodgers.