Aussie songstress, Natalie Imbruglia, is set to replace Boyzone's Keith Duffy for a one-off tribute set to mark the first anniversary of the death of Stephen Gately today.

Imbruglia will join Ronan Keating, Mikey Graham and Shane Lynch on stage in tonight's episode of 'The X Factor' in Australia. Both Keating and Imbruglia are judges on the Australian version of the hit show.

As previously reported by Pressparty, Duffy will spend the first anniversary of Gately's death at a secret service in Ireland where his former bandmate's ashes will be scattered.

The singer was Dannii Minogue's guest on last night's (October 2) episode of X Factor.

Imbruglia launched her singing career with the international hit, 'Torn'. Watch the video below: