Princess Kate made a humorous comment to royal fans ... In a touching moment, Louis accepted a Father Christmas headband from a well-wisher, politely thanking them before returning to his family.

It seemed Kate had taken some old-school athletic fashion notes from the late Princess Diana, who rocked a similar ski ... a ...

Merry Christmas from the Princess of Wales. Kate Middleton made an appearance ... Princess Beatrice also chose a moss-colored headband to go with her outfit. AFP via Getty Images Even Princess ...

Merry Christmas from the Princess of Wales. Kate Middleton made an appearance ... The pregnant royal chose a mossy velvet headband to go with her camel coat. Middleton, 42, has had a difficult ...