Kate Middleton and Prince William were all smiles [1] when they attended a church service at St. Mary Magdalene Church in King's Lynn, England, on Sunday. The royal couple was joined by Prince Harry, Prince Charles, and Queen Elizabeth II, just to name a few, and stayed true to their annual Christmas tradition [2] of spending the holidays at Sandringham. While Will and Kate's children, Princess Charlotte and Prince George, were noticeably absent, George is reportedly set to begin nursery school [3] at the Westacre Montessori School Nursery in Norfolk, England, in January.

Throughout the year, Will and Kate have created a long list of sweet moments together [4], from Prince Charlotte's exciting debut [5] to the family's new portrait [6]. And who could forget the time Will adorably admitted that he'd have to "ask the missus [7]" if their kids could watch sports? Read on to see more of the royal affair, and then look back at the best pictures of the British royals [8] from 2015.