What to wear on Christmas Day?

Some people like to spend the day relaxing in their new PJs others don the designer schmutter. We like to dress up. This year I have black velvet trousers and a wine coloured sparkly top from Monsoon. DH usually gets out smart trousers, a nice shirt and his sparkly waistcoat. DD2 always wears something nice but her DH doesn't see the point and can barely be encouraged to shave. GS likes to stay in his pj's. What will you be doing?