Katy Perry literally wore her heart on her sleeve. At the One Love Manchester benefit concert this past Sunday, Katy Perry's dress included fabric with the faces of the Manchester victims. The back of her dress was shaped like a heart, which is visible during her 'Roar' performance. During the show, she proudly spoke out to the audience: "It can be the most difficult thing to do, but love conquers fear, and love conquers hate, and this love that you choose will give you strength. It's our greatest power."