Katy Perry, Pixie Lott to be X Factor guest judges

London (ANI): Pop singers Katy Perry and Pixie Lott will be appearing as guest judges on the forthcoming series of 'The X Factor'. Perry and Lott, along with the Australian singer Natalie Imbruglia, will sit in the auditions in place of Dannii Minogue. Minogue is due with her delivery of her first child.

She will be joining her regular judges Simon Cowell, Louis Walsh and Cheryl Cole later in the year for the further tryouts, which will be at the judges' homes, reports the Telegraph. Other big names that will be joining the pannel will be revealed as the auditions tour the country including Dublin, London, Cardiff and Manchester.