Katy Perry has been on cloud nine since she welcomed her baby daughter Daisy Dove in August, and has been enjoying staying at home with her young family.MORE: Katy Perry's daughter Daisy made rare appearance in photo - did you notice?As well as looking after her newborn, Katy has also been hard at work, having returned to American Idol weeks after Daisy's birth.The award-winning singer looks incredible in the new promo photos for the series, which were released at the beginning of the week.