She has a younger brother, Damian, and an older half-sister, Sasha. In at the age of seventeen she appeared in the second series of " Fist of Fun ", the BBC comedy show from Stewart Lee and Richard Herring as a schoolgirl in a series of sketches entitled 'Teachers' one of her co-stars was the young Daniel Mays.
She studied at the Italia Conti Academy of Theatre Arts in London for three years during this time before becoming a professional model at the age of Her figure eventually caught the eye of the editorial team of the Daily Star tabloid,  which began featuring her as a Page Three girl. In April of the same year[ clarification needed which year? She also topped the ' FHM Sexiest Women in the World ' list in , which was said to have polled 15 million people.
Appearing in this list every year since , she ranked No. In , she was chosen as the "new face and body" of lingerie maker Ultimo 's advertising campaign.
She left the show in July During the TV series, her father Kenneth Parsons died from cancer,  and although she initially decided to continue dancing in his memory, she withdrew from the competition in week nine. Brook and Fortuna were put into fourth place, but with the studio audience's vote they came second to Jill Halfpenny and Darren Bennett.
In , Brook took Jennifer Ellison 's place as one of the three judges on the second series of the reality TV programme Dirty Dancing: In January , she joined the third series of Britain's Got Talent as a fourth judge, but was subsequently axed from the programme after less than a week on the panel, the producers having decided the four-judge format was "too complicated". She appeared in Season 9, replacing Fearne Cotton while she was on maternity leave.
Shortly thereafter, she appeared in the film Ripper. She has also completed assignments as a film actress in Canada and made a short appearance as Lyle's girlfriend in the film The Italian Job.
Her first starring role was in the film School for Seduction , for which she received positive reviews for her role. She acted in the science fiction thriller Shadow Play, directed by Nick Simon.
The film received a worldwide theatrical release on 20 August In Brook appeared in the video to Lawson 's song " Juliet ". The couple ended their relationship in April and briefly got back together before ending their relationship in August