The Queen's Platinum Jubilee is now all wrapped up and the ceremonies are over, but mysteries and little-known secrets are still coming to light - from lip readers' insights to family tensions being leaked.
And it turns out there was a secret hidden in the monarch's outfit, as on Sunday she donned a chic green coat with a distinctive black pin in her hat, as Hello! Reports.
Many were left bemused by the pin, wondering why it was there and what its purpose was - was it strictly decorative, or did it serve a function?
