But now its time to return to what Kimberley became famous for - recording music.
The Yorkshire-native, who looked stunning in a red dress at the Music Industry Trust Awards Dinner on Monday night, is set to release her debut solo album in February next year.
Solo star: Kimberley Walsh, pictured at the Music Industry Trust Awards on Monday night, is recording her solo album
Instead, the 30-year-old will release an album of West End hits, entitled Centre Stage.
Kimberley started recording the disc in Stockholm with producers Per Magnusson and David Kreuger over the summer after signing with Decca Records.
She enthused: 'I've always loved musical theatre and doing Shrek: The Musical definitely re-ignited the passion in me.
Red alert: The 30-year-old showed off her trim figure in the red lace dress'I really wanted to share the love I have for musical theatre by taking some classic songs and completely reinventing them.
'The melodies in so many musical songs are so brilliant I knew we could create something special by experimenting with the production and I really feel like we've come up with some interesting takes on classic songs.'
Kimberley's decision to go solo at the time comes as a surprise as it will coincide with the Girls Aloud reunion.
West End star: Kimberley's solo album is due for release in February 2013The five-piece, who were put together on reality show Popstars: The Rivals, are marking their 10th anniversary with a greatest hits album, new single and arena tour.
And of course, Kimberley is still training for Strictly Come Dancing, resulting in a very busy schedule for the singer.
She admitted: 'There’s a lot going on right now but I am loving every minute and can’t wait for people to hear these songs I’ve recorded.'