Katy Perry hit PEOPLE’s Music Lounge in N.Y.C. this week to celebrate her new “Waking Up in Vegas” video showing off her signature style in a flapper-meets-showgirl style dress that paid homage to Sin City. “Usually I’m trying to look like a party,” she told of her wild-child fashion credo. And to achieve the desired effect — including the aforementioned gilt frock — she turns to over-the-top label The Blonds. “They’re larger than life,” she says of Phillipe and David Blond, the design duo who was also behind her memorable Hello Kitty corset and Grammy’s fruit dress. “I love that they have no limits!” Perry is equally colorful in her new video, thanks to the expertise of costume legend Bob Mackie. “He picked out my clothes for ‘Waking Up in Vegas’ . . . I’m very happy about that!” she says. “Bob Mackie designed some of Cher’s most amazing costumes — I really want to see her show in Vegas now.” And in true diva style, Perry says she makes sure to wear a different outfit every night while on tour, giving the castoffs to her girlfriends afterward. “I’m running out of options now,” she says with a laugh. “I don’t ever want to wear just jeans and tee shirts. I like to have fun with fashion.” Tell us: What do you think of Katy’s wild style? –Rennie Dyball