Katy Perry Reigns Supreme At Her Killer Queen Fragrance Launch! (PHOTO)

All hail Katy Perry, the Queen of everything! We've been calling Katy Perry royalty for, like, EVER (#trendsetters), but it's looking pretty official now that she's sitting on HER OWN THRONE. OK, so technically Katy's just pretending to be royalty for the unveiling of her brand-new fragrance, Killer Queen, but don't act like pretending that