Singer also demands 'cream coloured egg chairs' on her rider
'Firework' singer currently ahead of Madonna as voting continues
Christian mother calls Perry's hits 'disgusting'
'California Gurls' singer's duet with Elmo axed following negative feedback
Perry tops albums chart while Murs has top-selling single
She's up against 'X Factor' reject Olly Murs in the UK Singles Chart
Singer responds to news reports about legal action
US stars score high in the midweeks
Natalie Imbruglia and Geri Halliwell also among those filling in for Dannii Minogue