NEED TO KNOW

  • Prince Louis waved, laughed and smiled during his appearance at Trooping the Colour with the royal family
  • Louis’ big grin showed an update on his front teeth growing in
  • Kate Middleton and Prince William’s son was spotted copying King Charles by waving on the Buckingham Palace balcony

Prince Louis is once again having a blast at Trooping the Colour.

Members of the royal family gathered in London on June 14 for the annual public birthday celebration of the British monarch, honoring King Charles for the third time during his reign. Prince William and Kate Middleton joined the festivities with their three children — Prince George, 11, Princess Charlotte, 10, and Prince Louis, 7 — with the Princess of Wales riding in a horse-drawn carriage beside her kids during the procession.

Prince Louis sported a big smile during the parade, showing that his adult teeth are growing in after starring in his birthday portrait in April with a grin minus his two front teeth.

Louis displayed his royal wave as he greeted the crowds lining the streets and also shared some laughs with his big brother, who he sat beside while seated across from mom Kate and sister Charlotte.

Prince Louis and Prince George at Trooping the Colour on June 14, 2025.

Aaron Chown/PA Images via Getty

When the royals gathered on the Buckingham Palace balcony for the event’s grand finale, the aerial flypast, Prince Louis continued to delight. At one point, he looked up at King Charles waving, then copied his grandfather by greeting the crowd gathered below with the same gesture.

Prince Louis was also spotted turning around to chat with Prince William, then nodding enthusiastically as he faced forward again.

Prince Louis, Prince George and Princess Charlotte at Trooping the Colour on June 14, 2025.

Aaron Chown/PA Images via Getty

As the royals headed back inside the palace, Louis made sure to turn and give one last wave to the crowd.

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Prince Louis waves at Trooping the Colour on June 14, 2025.

Chris Jackson/Getty

Prince Louis is known for stealing the show at Trooping the Colour, ever since his first appearance in 2019. Just two months after his first birthday, William and Kate brought their youngest child out for his Buckingham Palace balcony debut at the event. Baby Louis delighted the crowds (and his parents!) with his enthusiastic wave and by pointing toward the planes flying overhead.

Last year, Prince Louis charmed again while watching the presentation from the Major General’s Office overlooking Horse Guards’ Parade. In a clip posted on X, the young prince was seen swaying his hips from side to side as he danced to the band’s music — although his moves prompted Princess Charlotte to tell her brother to “stop.”

Prince Louis and Prince George at Trooping the Colour on June 14, 2025.

Chris Jackson/Getty

Prince William, 42, and Princess Kate, 43, work hard to balance raising their children in their royal roles while prioritizing their privacy. George, Charlotte and Louis only attend a handful of public events each year, and William and Kate usually scale back their workload when their children are off from school so they can spend time together as a family.

Royal biographer Ingrid Seward told Hello! magazine last year, “Like many famous parents, they are cautious about exposing the children to too much scrutiny in this digital age. They know they must produce the children at certain times, but I think they very much keep them under wraps the rest of the time.”

Princess Charlotte and Kate Middleton at Trooping the Colour on June 14, 2025.

Neil Mockford/Getty

She added, “The three of them seem to get on incredibly well. They’re close in age, they all enjoy sports, they’re bound by the situation they’re in, and they’re all in it together. And I think that makes them all closer.”