The Queen and The Duke of Edinburgh attended church at Flitcham, Norfolk, near the Sandringham estate.
For more: Telegraph article.
Regal in purple and no brooch in sight. (She's worn brooches with this coat before, but they're really not needed with the lapel and those buttons.) Also of note: accompanying the royal party to church today were David and Serena Armstrong-Jones, the new Earl and Countess of Snowdon. They are regular Sandringham visitors, and it's nice to see them spending some time with The Queen after Lord Snowdon's death.