Dannii has 'sleepless nights' over 'X Factor'

According to the pregnant judge's sister Kylie Minogue, Dannii gets so "emotionally involved" with the contestants in the reality show 'The X Factor', that she often struggles to sleep properly.

Kylie - who has previously helped her sister select her finalists for the singing show - would love to join her sibling again for the show, but doesn't ever want to be as hands-on as Dannii.