'Roar' hitmaker Katy Perry says her divorce from Russell Brand was emotionally devastating.

Perry, 29, and Brand, 39, finalised their divorce in 2012 and the singer says it was incredibly traumatic, reported the Rolling Stone magazine.

"It was emotionally traumatic for me. It was the death of a dream. I was in fairytale land, and the reality of it wasn't so," she said. 

Perry said she does not like talking about her failed marriage because she does not want to appear desperate.

"But I don't really like talking about it anymore, because it feels like a thousand lifetimes ago, and also it makes me look desperate, like I need it for attention," she said.