Trump later incorrectly claimed this was the first time the Queen had reviewed her royal guard for 70 years.
And one Twitter user has suggested that the Queen herself was conducting a protest of her own with the choice of brooches she wore during Donald Trump's time in England, the Daily Mail reports. On Twitter, she noted the importance of brooches in Queen Elizabeth's life, adding that everyone gives them to her as gifts. The brooch appears in the iconic and haunting Three Queens in Mourning photo taken at the funeral in which Elizabeth, her mother and grandmother Queen Mary - representing three generations - huddle together in their heavy black mourning clothes and veils.
Because Queen Liz may be a lot of things, but above all else she is a sauced-up bulldog who you simply do not cross.
According to Julie, the Queen trolled Trump three times with three pairs of brooches - one for each day of his United Kingdom visit.
The president and first lady Melania Trump met the queen last Friday. "Badges of military regiments - she inspects some troops, she wears the badge of them to do it". The next day, she adorned herself with another piece she holds dear to her heart: the Sapphire Jubilee brooch, a gift from Canada - the same country Trump is now risking a trade war with. On this day Elizabeth II wearing a brooch given to her by Barack and Michelle Obama in 2011.
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The Obamas reportedly hand-picked the personal gift, which featured 14-karat yellow gold, diamonds and moss agate, at Washington D.C.'s Tiny Jewel Box store.
The thread has garnered more than 3,000 likes as her followers applauded her astute observation.
Throughout her long reign, Britain's Queen Elizabeth has stayed far removed from the political fray as her position as constitutional monarch dictates.
On July 12, the same day that U.S. President Trump arrived in London, the British monarch was photographed sporting the American State Visit Brooch during a meeting with the Archbishop of Canterbury and the Grand Imam of Al-Azhar.
MailOnline has contacted Buckingham Palace for a comment.
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Imagine waking up to find out The Duchess of Sussex stunned at a royal engagement wearing something you designed. However, a sourced told the Daily Mail that the whole thing was "made up". "Enough is enough", she added.