Pop star Katy Perry has announced her third fragrance will be called Killer Queen. The Firework singer gave fans a sneak peak at her new scent on Thursday (02May13) when she posted a shot of the bottle on her Facebook.com page, and now she's revealing more about the project. Killer Queen will be the follow up to 2010's Purr and 2011's Meow. Perry held a fragrance launch party in New York on Thursday night (02May13), when she greeted friends, fans and curious industry types while perched on a throne at the James B. Duke Mansion. After the party she tweeted, "Just had an elegant unveiling of my new fragrance KILLER QUEEN at the Duke! Can't wait to share the royal juice! so sophisticated."