What do New Zealanders wear on Christmas Day?

What ever they wish unless they are working.

The Christmas feast is increasingly becoming a casual affair. Often it is a barbeque on the deck, but the traditional Christmas fare of turkey, ham, and roast potatoes are still very popular. For dessert, plum pudding, and Christmas cake are served alongside the Kiwi icons, pavolova, kiwifruit, strawberries, and cream.