Welcome to the Katy Perry thread!  Katy Perry is an American entertainer, pop singer-songwriter, businesswoman, actress, philanthropist who has sold over 100 million records worldwide since her mainstream debut in 2008, including 14 million albums and 72 million RIAA certified digital singles in the US alone, scored 9 multi-platinum #1 Billboard HOT 100 singles, 4 UK #1 hits, won 4 Billboard Music Awards, 2 American Music Awards, and 4 MTV Video Music Awards. She's also the first female artist