"The topic came up about what all the grandparents wanted to be called – both my dad and father-in-law want to be called Grampy and both my mum and mother-in-law want to be called Nanna.

Kristen called their off-screen chemistry to be like an old ‘granny and grampy.’ “We bicker all the time. We're like an old granny and grampy. It's not hot and heavy on set at all." ...