Handbag.com - Fri, May 3, 2013 16:45 BSTRegal was the theme of choice for Katy Perry last night as she attended a sneak peek of her new fragrance, Killer Queen, in New York.As well as catching our eye in a floral print gown by Thom Browne, Katy was sporting some seriously impressive nail art. Like, wow. Opting for a deep red base colour, her long talons were embellished with striking gold, 3D details. A ruby gem was the piece de resistance, which hung from her pinky nail. ... More »NAIL ART: Katy Perry's Killer Queen perfume nails