Kirby's vocal talent became apparent early in life, and she took singing lessons with a view to becoming an opera singer. She became a professional singer after meeting bandleader
Bert Ambrose at the Ilford Palais in 1956. She remained with Ambrose's band for three years, and he remained her manager, mentor and lover until his death in
Leeds in 1971. Also in 1960, on
Parlophone Records, (45-R 4620), she was the uncredited girl speaker on
Bruce Forsyth's ' I'm a Good Boy '. She adopted a "
blonde bombshell" look and was compared to
Marilyn Monroe. In 1962, Kirby signed a contract with
Decca Records, for whom her first single was "(He's a) Big Man", released in October 1962. It sold well over a long period of time, but failed to reach the British charts. Its follow-up was an upbeat reworking of the
Doris Day classic "
Secret Love", which peaked at No. 4 on the
UK Singles Chart. She represented the United Kingdom in the
Eurovision Song Contest 1965 and came second with the song "
I Belong", which also became a hit. Author and historian
John Kennedy O'Connor describes Kirby's "I Belong" as being far more representative of current musical tastes than other songs from the contest, but she was beaten by
France Gall from France, and representing
Luxembourg, singing an even more contemporary song written by
Serge Gainsbourg. Bitter at her defeat, she slapped Gall. An EP was issued featuring the six songs selected for the Eurovision Contest, featuring a different version of "I Belong", which peaked at No. 10 in 1965. No. 39 in Detroit, No. 39 in Washington, and No. 38 in Los Angeles. After the chart success of "I Belong", Kirby recorded more than a dozen singles between 1965 and 1967, but they failed to chart. She continued to make television appearances, including on
The Wheeltappers and Shunters Social Club in 1975. During the 1970s, Kirby's singing career was eclipsed by a turbulent personal life, but she continued to perform live at smaller venues and made occasional television appearances and performed a few live concerts on the nostalgia circuit. On 31 December 1976, she performed her hit song "Secret Love" on BBC1's
A Jubilee of Music, celebrating British pop music for
Queen Elizabeth II's impending
Silver Jubilee. Her final single, "He", was released in March 1981, at which time she was interviewed by Simon Reed for
ITV. The interview focused on her attempted comeback after a difficult decade personally and professionally. In December 1983, she gave one last concert in Blackpool, then retired from show business altogether. ==Post-retirement==