Queen's niece makes rare appearance at Buckingham Palace for Christmas lunch
One of the family members went against royal protocol during Christmas celebrations last year
Camilla
Queen left in stitches as Father Christmas presents dog gifts but nothing for Camilla
Father Christmas invited Camilla to climb aboard Queen Victoria's sleigh
Royal fans can purchase stake in racehorse honouring late Queen to fund Brain Tumour research
Queen Camilla has maintained a keen interest in the horse
