Monk's professional music career began in 1999 when she responded to an advertisement at the recommendation of her mother which requested girls with vocal and dance experience. The advertisement was for an Australian reality television series, Popstars, a TV talent show which aimed to create a successful new girl group. Monk, who has been trained in classical and pop singing and has been performing since she was eight years old, drove all night to audition. In one audition, she performed a rendition of Marilyn Monroe's famous "Happy Birthday, Mr. President", working on her previous experience as a Monroe impersonator at Warner Bros. Movie World. After numerous rounds of singing and dancing workshops, Monk was selected as a member of the group, which was named Bardot.