Bailee Madison was born to Patricia Riley and Michael Shawn Riley. Her parents are of American nationality. Her mother is a businesswoman.

Bailee Madison is an American actress who initially gained attention for portraying May Belle Aarons in the fantasy drama film Bridge to Terabithia.

On television, Bailee Madison appeared as young Snow White in the fantasy drama series Once Upon a Time (2012–2016), Hillary Harrison in the sitcom Trophy Wife (2013–2014), and Sophia Quinn in the drama series The Fosters (2014–2016).

Bailee Madison is known for her starring roles as Isabelle in the war drama film Brothers (2009), Sally Hurst in the horror film Don’t Be Afraid of the Dark (2010),  and Maggie in the romantic comedy film Just Go with It (2011).

From 2015 to 2021, Bailee Madison starred as Grace Russell in the Hallmark Channel comedy-drama series Good Witch.

In 2022, Bailee Madison started her role as Imogen Adams in the horror thriller series Pretty Little Liars: Original Sin.