Katy Perry delivered a devastating parting shot to ex-husband Russell Brand during a concert in the UK last July, saying he 'should be in jail.' The Firework singer made the extraordinary remark during her appearance at the Blenheim Palace Festival in Oxfordshire when she took part in a question-and-answer session with her fans.

Katy Perry shared details of her "tornado" marriage with Russell Brand and even seemed to take a brutal swipe at her now disgraced ex.