In this lavishly illustrated special edition, People takes you inside the British royal family's holiday traditions and customs, many carried from the Victorian era to today. From the Christmas plays that Queen Elizabeth appeared in as a child with her sister Margaret, to Prince Harry's Christmas in Afghanistan, and Prince William and Princess Kate's next generation traditions with their kids. Visit the Sandringham estate in Norfolk, that has played host to many a family celebration, go behind the scenes of the Queen's annual Christmas Day address, and discover what it takes to deck the halls of a castle. Plus: the Windsors' holiday cards, their tradition of giving gag gifts, and a former palace chef's recipe for plum pudding.