In 2011 she was featured as one of a challenged and challenging class of youngsters in the Hallmark Hall of Fame movie Beyond the Blackboard.
The young wizards of the Harry Potter franchise are the most notable recent example; Willow and her co-stars in The Hunger Games are going to be another set of child actors and actresses growing with and into a series of sequels.
She also has an older brother called River; all three siblings are in the acting business, though so far Willow is the only with a significant fan base.
In fact both Willow and Autumn had roles as young girls witnessing a gunfight.
Her role as Primrose, the younger sister of Hunger Games star Katniss Everdeen, played by Jennifer Lawrence, has brought her a lot of attention and bodes well for her budding career.
Willow hails from Albuquerque, New Mexico where she and her twin sister Autumn were born on June 1, 2000.