Perry and Lott to be 'X Factor' judges
Chart-topping singers Katy Perry and Pixie Lott are to join the next series of 'The X Factor' as guest judges, it was announced today.
The duo, with Australian singer Natalie Imbruglia and Spice Girl Geri Halliwell, will stand in for mother-to-be Dannii Minogue, who is due to give birth in July, during the audition shows around the country.
