Katy Perry performed at the Rock in Rio festival in Rio de Janeiro last weekend when she invited one of her Katy Cats to join her onstage, when things took a weird turn.
Graffiti artist Joseph Tierny brought a lawsuit against Italian fashion house Moschino, saying Jeremy Scott reproduced one of his murals without permission.
If tying a record with Michael Jackson wasn't enough prestige for Katy Perry, the singer is now the only artist to have two music videos hit over 1 billion views on Vevo.