Her top four hits on the Australian Kent Music Report Singles Chart were "Goosebumps" (October 1979) and "He's My Number One" (February 1980).

[3][4] By the mid 1970s, Britten was living in Australia and was impressed by Allen's vocal ability and bubbly personality and began songwriting for her.

[3][5][6] Her next three singles from her debut album, Magic Rhythm (November 1979), were top 20 hits; "Falling in Love with Only You" reached No.

[8]Christie Allen gave Countdown something it had been lacking – a local female artist to appeal to the teeny boppers.

It is sometimes not appreciated just how successful Christie was.Besides performing, Allen also appeared on Countdown as a guest host in November 1979 with Russell Hitchcock (Air Supply), and in April 1980 with Molly Meldrum.

In August 1980, Allen released the singles "Baby Get Away", "Switchboard" and "Don't Put Out the Flame" and her second and final studio album Detour.

[11] On 14 November 1998 Allen sang "Goosebumps" before a huge crowd at the Melbourne Cricket Ground—she retired following her performance which was released on the VHS album, Mushroom 25 Live (December 1998).

In 2006, Gudinski asked Allen to participate in the Countdown Spectacular tour; however, due to ill health, she declined.

In March 2008 Allen was diagnosed with pancreatic cancer and died at her home in rural Western Australia on 12 August 2008, aged 54.