Bree Williamson was born and raised in Toronto, where she originally planned to pursue a career in business, psychology or women's studies. She even opened a successful clothing store with her sister, Tarra, in her late teens.
Eventually, Bree completed a leading role in the feature film Adam and Eve, which debuted at the 2003 Toronto Film Festival. She was cast on One Life to Live on February 5, 2003, in the role of Jessica Buchanan.
Since the, she has relocated to Manhattan.