Katie Perry Launches Killer Queen Fragrance

Katie Perry showed off some serious 90s style for the official launch of her new fragrance "Killer Queen". Some other notable celebs that have pulled off the Catholic Schoolgirl look include Harry Potter alum Emma Watson, Vampire Diaries star Kat Graham, and Duchess Kate Middleton. Perry is no stranger to the schoolgirl look, she wore a similar outfit to an MTV VMAs after party just last month.