Prince Louis debuts adorable royal wave at Trooping the Colour

Prince Louis made his debut on the Buckingham Palace balcony on Saturday for the annual Trooping the Colour.

It seems like he's been getting some tips in the royal wave department from his big sister, Princess Charlotte, because the toddler couldn't stop waving to the crowds.

The adorable one-year-old also seemed extremely excited by the Royal Air Force flypast.

Earlier in the procession, while his parents, the Duke and Duchess of Cambridge, along with other senior royals attended the ceremony at the Horse Guard Parade, Louis was seen taking a sneak peek out the window alongside Charlotte.

The young prince appeared—again, taking tips from his elder siblings—to make a funny face as he watched the crowds gather around Buckingham Palace.

Trooping the Colour is one of the most important events in the royal calendar as it marks the official birthday of the ruling sovereign, which is currently Queen Elizabeth II.

It also is one of the few events the entire royal family attends.

Along with Prince Louis, his elder siblings, Prince George and Princess Charlotte, also gathered on the Buckingham Palace balcony with their parents, Prince William and Kate Middleton.

The Duke and Duchess of Sussex were also present for the event, which also marks Meghan's first appearance since giving birth to baby Archie Mountbatten Windsor. The one-month-old was not present at the procession.

The Queen, Prince Charles, Camilla, Duchess of Cornwall, the Duke of York, Princess Eugenie, Princess Beatrice and more also gathered on the famous balcony to watch the RAF flypast.