Katy Perry forced not to wear bra as she revels in 451% sales

Katy Perry v Katie Perry: Singer loses trademark battle

Katy Perry Is Leaving Her “California Gurls” Era Behind

Judge sides with Katy Perry to oust disabled vet from his home

Katy Perry is bra free as she wears a tank top and MAMA cap

Judge sides with Katy Perry to oust disabled vet from his home

Judge sides with Katy Perry to oust disabled vet from his home

Um, Katy Perry Flashed Totally Sculpted Abs In A Bra Top In These Photos

Katy Perry booed for criticizing 'American Idol' contestant's outfit

Katy Perry Speaks! Read Her First Comments Since Russell Brand Filed for Divorce

Katy Perry's peppermint bra forced into retirement after wardrobe malfunction

Katy Perry Flaunts Sculpted Abs In A Metallic Bra Top In Photos

Katy Perry Loses Trademark Battle With Designer Katie Perry

Katy Perry v Katie Perry: Singer loses trademark battle

Katy Perry's abs in a tiny bra top stole the red carpet