Brook was born in Rochester, Kent, England. She is the daughter of Sandra, a cook, and Ken, a scaffolder; she has a younger brother, Damian, and an older half-sister named Sasha. Ken Parsons died from cancer on 26 November 2007, during Brook's time on Strictly Come Dancing.Brook attended The Thomas Aveling School in Warren Wood, Rochester, Kent. She then studied at the Italia Conti Academy of Theatre Arts in London for three years before becoming a professional model.
