Record-breaking Irish boy band formed in 1998 by Louis Walsh, and with worldwide album sales approaching 50 million.
The four ever-present members are Nicky Byrne, Kian Egan, Mark Feehily and Shane Filan.
Founder member Brian McFadden left to pursue a solo career, finding success in Australia.
Their debut single 'Swear It Again' was the first of over a dozen No 1 singles.
In 2011, Westlife announced they would be splitting up in 2012.
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