Avril Lavigne's Hello Kitty obsession is quickly taking over her house - she has filled three rooms full of cute memorabilia. The pop punk has been collecting soft toys and keepsakes of the Japanese bobtail cat cartoon from her travels around the world for years, but she's struggling to contain her vast collection and she's starting to feel sorry for her new husband, Nickelback frontman Chad Kroeger.

She tells U.S. talk show host Katie Couric, "Chad has been so kind because... one room turned into two rooms and now I'm working on a third, literally I have three Hello Kitty rooms and I just turned the office into pink everywhere..."