Singer Katy Perry performs onstage at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

Leigh Lezark and Katy Perry attend the Viktor & Rolf Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week at Espace Ephemere Tuileries on March 3, 2012 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)

Katy Perry attends the Viktor & Rolf Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week at Espace Ephemere Tuileries on March 3, 2012 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)

Katy Perry attends the Viktor & Rolf Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week at Espace Ephemere Tuileries on March 3, 2012 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)

Katy Perry attends the Viktor & Rolf Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week at Espace Ephemere Tuileries on March 3, 2012 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)

Katy Perry attends the Viktor & Rolf Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week at Espace Ephemere Tuileries on March 3, 2012 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)

Katy Perry attends the Viktor & Rolf Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week at Espace Ephemere Tuileries on March 3, 2012 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)

Katy Perry attends the Viktor & Rolf Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week at Espace Ephemere Tuileries on March 3, 2012 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)