https://www.theguardian.com/fashion/2018/jul/18/was-the-queen-sending-coded-messages-to-donald-trump-via-her-brooches-absolutely
"On the first day of the Trump visit, the Queen wore a simple green brooch that was given to her by the Obamas to signify their friendship. On the second day, she wore a brooch given to her by Canada, a country with which Trump is less than pleased at the moment (also, it was in the shape of a snowflake, a classic Trump term for people who disagree with him.) And, for the last day, she chose a brooch the Queen Mother wore to the funeral of King George VI, so not one associated with happiness and joy.
Queen’s brooches: 3. Trump: 0. "