It was a four-day weekend full of celebration to honour the Queen's remarkable 70-year reign. But it goes without saying that Prince Louis stole some of the limelight, winning over crowds with his hilarious reactions during the Queen's Platinum Jubilee.
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During the course of the weekend, the four-year-old made headlines for pulling a series of faces at Trooping the Colour and when he later appeared on the Buckingham Palace balcony for the flypast. Two days later, during the Pageant, the young royal was spotted covering the Duchess of Cambridge's face when he sat in the royal box - much to the world's amusement.
WATCH: Prince Louis having fun with Prince William and Kate at the Jubilee Pageant
After delighting royal watchers, Prince Louis instantly became a social media hit. On Monday, his parents, Prince William and Kate even addressed their son's cheeky behaviour in a special Instagram post.
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Sharing a series of their highlights, the royal couple said: "What a fantastic weekend of celebrations. Seeing people across the nation coming together with family, friends and loved ones has been extremely special.
"Thank you to everyone who turned out to show their gratitude to The Queen and her inspiring 70 years of leadership. From the crowds on the Mall to communities hosting street parties up and down the country, we hope you had a weekend to remember."
Prince Louis with his mother Kate during Sunday's Platinum Jubilee Pageant
Referring to little Louis, Prince William and Kate ended their personal message with: "We all had an incredible time, especially Louis… [eyes emoji]. W & C." The special post also featured behind-the-scenes footage and photos following the royal family - including a candid black-and-white photo of William and Louis inside Buckingham Palace.
MORE: Kate Middleton has a word with Prince Louis as he pulls faces at Trooping the Colour
SEE: Platinum Jubilee Pageant best moments
At Thursday's Trooping the Colour, Louis let out a howl and covered his ears during the flypast, and his 'Gan Gan' the Queen sweetly interacted with her great-grandson, leaning down to chat to him and point out the planes.
Prince Louis' funny faces delighted fans
He then sat front row of the royal box with his parents and siblings Prince George and Princess Charlotte on Sunday. Keeping himself entertained, Louis covered his eyes and blew out his cheeks as he watched the carnival pageant.
For the final royal outing, Louis returned to the balcony as the Queen made surprise a balcony appearance to round off the celebrations, joining his siblings for the historic moment. Louis waved both his hands and joined in the national anthem.
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