The 12 inch-tall Katy Perry doll uses the standard Fashion Royalty body. It will be sold through Integrity Toys Direct. The doll, which will retail (currently sold out on pre-orders but there is a form for availability information in the official page) for $49.99 (plus shipping/handling/tax) is immediately recognizable as a signature fashion look, featuring Katy's belted gold mini dress with accordion-pleated skirt, inspired by the wildly popular and 5 times MTV VMA nominated "I Kissed A Girl" video clip, below.
Katy Perry has her own blog and also an official site (Warning- LOUD music).