United Kingdom, July 2 -- Katy Perry suggested her ex-husband Russell Brand should be in jail as she played a game with fans at her at Blenheim Palace concert.

The Hot and Cold singer - who was married to the British comic for 14 months from October 2010 - played an interactive game with the audience during her performance in Oxfordshire on Wednesday (01.07.26) night, in which a giant tablet suggested poses to act out and cameras then displayed fans' images on the big screens.

After asking fans to do their best impression of pretending to be sober - for which the cameras honed in on Jedward - Katy then requested people act out reacting to "seeing their ex".

And she quipped: "I hope my ex isn't here. He should be in jail."

Russell is c...