Thousands of people lined the streets around Buckingham Palace today (2 June) to mark the start of the Queen's Platinum Jubilee celebrations.
Crowds gathered to see Liz, who came out on the balcony along with members of her family, including the heir to the throne, Prince Charles.
And it looks as though the occasion was a bit too much for the Prince of Wales, as he was caught shedding a few tears as the Red Arrows roared past overhead.
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Footage from the flypast showed Charles stood by his wife, Camilla, and the Queen, who were looking up as the squadron painted the skies red, white and blue.
And as the planes flew off into the distance, Charles appeared to become quite emotional, a moment that wasn't missed by people watching at home.
Writing on Twitter, one user said: "Prince Charles was crying as the planes flew. Touching."
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While another commented: "Prince Charles crying, my heart goes out to him."
Charles wasn't the only one whose reaction caught people's eye, though.
While you might think that all eyes would be on the Queen for his special day, Prince Louis seems to have stole the show.
It would seem that the prince really didn't enjoy their performance as much as the rest of the royals and the crowds below.
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He was even seen covering his ears and grimacing at the noise created by the iconic squadron at one point.
Sharing a snap of the prince's reaction to Twitter, one user said: "Prince Louis is stealing the show on the balcony."
Another chipped in: "Prince Louis is a whole mood."
"Prince Louis was really tired when he appeared on the balcony bless him. Loved him turning to HMQ for a chat. She's great with the young ones," put a third.
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While another added: "The noise proves a bit too much for Prince Louis."
People watching at home were also loving Seamus the dog, who joined guards for the procession this afternoon.
Viewers were welcoming the addition of the Wolfhound and have been raving about Seamus all over social media.
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However, the reason why we're seeing the two-year-old dog is because the Irish Wolfhound happens to be the official regimental mascot of the Irish Guards.
As reported by Metro, Drummer Adam Walsh, Seamus’s handler, said its ‘a real privilege’ to be part of the march.
Walsh said: "When it comes to the day, it’s all going to pay off. A lot of the lads have bigger parts to play than me and Seamus, but me and him still need to get it all correct."
Although his performance wasn't exactly in sync with the other guards, viewers were absolutely loving him.
One user wrote: "Here he goes, Seamus the Irish Wolfhound! What a cutie!"
Topics: The Queen, Prince Charles, UK News, Royal Family