Are you the world’s biggest KatyCat? Do you know everything there is to know about the world’s best-loved singer? Then this is the book for you! In this easy-to-digest eBook are 101 facts about your favourite superstar – do you know all of them? Test yourself and your friends with these handily-packaged facts easily organised into categories for maximum enjoyment. Subjects include Katy's music, fashion and of course her ill-fated relationship with Russell Brand. Show everyone that you are the master of Katy Perry mania!