The new American Idol judge is notorious for her demands, which have included:

• Room temperature Evian
• Everything in the room to be white; white couches, white curtains, white flowers, white tablecloths and so on
• No food in the dressing room, just beverages - food is to be kept outside
• Ironing board - we bet that's not for her
• An assortment of current R&B, hip-hop and salsa music