S12, E24: Katy Perry guest judges a special Hot N Cold challenge to honour the iconic MasterChef theme song. The contestant with the best dish will find themselves safe from Sunday's elimination.

Starring Katy Perry, Ben Ungermann, Brendan Pang

S12, E24: Katy Perry guest judges a special Hot N Cold challenge to honour the iconic MasterChef theme song. The contestant with the best dish will find themselves safe from Sunday's elimination.