Prince Louis steals the show during Trooping the Colour debut: Photos!

His big debut!

Prince Louis joined the rest of the royal family on the balcony of Buckingham Palace on Saturday during the annual Trooping the Colour celebration in honor of Queen Elizabeth's birthday, making it his first appearance at the high-profile event.

The 1-year-old son, who is the youngest child of Prince William and Kate Middleton, adorably stole the show on the balcony while wearing a blue-and-white ensemble as he waved to the thousands of people gathered outside the palace grounds. 

Duchess Kate and Prince William switched off holding their youngest child while their other two kids, Prince George and Princess Charlotte, stood in front of them.

Louis was very expressive during his balcony debut, looking everything from excited, mad, awe-inspired and confused during Trooping the Colour.

See photos of Prince Louis at Trooping the Colour below:

16 PHOTOS
Prince Louis at Trooping the Colour 2019
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Prince Louis at Trooping the Colour 2019
LONDON, ENGLAND - JUNE 08: Prince William, Duke of Cambridge and Prince Louis of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 8, 2019 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 08: Prince Louis, Prince George, Prince William, Duke of Cambridge, Princess Charlotte and Catherine, Duchess of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Chris Jackson/Getty Images)
LONDON, ENGLAND - JUNE 08: Prince Louis, Prince George, Prince William, Duke of Cambridge, Princess Charlotte and Catherine, Duchess of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Chris Jackson/Getty Images)
The Duke and Duchess of Cambridge with their children, Prince Louis, Prince George, Princess Charlotte and the Duchess of Cornwall, on the balcony of Buckingham Place watch the flypast after the Trooping the Colour ceremony, as Queen Elizabeth II celebrates her official birthday. (Photo by Victoria Jones/PA Images via Getty Images)
LONDON, ENGLAND - JUNE 08: Prince Louis, Prince George, Prince William, Duke of Cambridge, Princess Charlotte and Catherine, Duchess of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Chris Jackson/Getty Images)
LONDON, ENGLAND - JUNE 08: Prince Louis, Prince George, Prince William, Duke of Cambridge, Princess Charlotte and Catherine, Duchess of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Chris Jackson/Getty Images)
LONDON, ENGLAND - JUNE 08: Prince Louis, Prince George, Prince William, Duke of Cambridge, Princess Charlotte, Catherine, Duchess of Cambridge, Camilla, Duchess of Cornwall, Prince Charles, Prince of Wales, Princess Anne, Princess Royal and Queen Elizabeth II during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Chris Jackson/Getty Images)
LONDON, ENGLAND - JUNE 08: Prince Louis, Prince George, Prince William, Duke of Cambridge, Princess Charlotte and Catherine, Duchess of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Chris Jackson/Getty Images)
LONDON, ENGLAND - JUNE 08: Prince Louis, Prince George, Prince William, Duke of Cambridge, Princess Charlotte and Catherine, Duchess of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Chris Jackson/Getty Images)
LONDON, ENGLAND - JUNE 08: Camilla, Duchess of Cornwall with Catherine, Duchess of Cambridge and Prince Louis of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 8, 2019 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
(L-R) Britain's Prince William, Duke of Cambridge, Prince George, Princess Charlotte and Britain's Catherine, Duchess of Cambridge holding Prince Louis stand with other members of the Royal Family on the balcony of Buckingham Palace to watch a fly-past of aircraft by the Royal Air Force, in London on June 8, 2019. - The ceremony of Trooping the Colour is believed to have first been performed during the reign of King Charles II. Since 1748, the Trooping of the Colour has marked the official birthday of the British Sovereign. Over 1400 parading soldiers, almost 300 horses and 400 musicians take part in the event. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
The Duke and Duchess of Cambridge with their children, Prince Louis, Prince George, Princess Charlotte, Duchess of Cornwall, on the balcony of Buckingham Place watch the flypast after the Trooping the Colour ceremony, as Queen Elizabeth II celebrates her official birthday. (Photo by Victoria Jones/PA Images via Getty Images)
TOPSHOT - (L-R) Britain's Prince William, Duke of Cambridge holding Prince Louis, Prince George, Princess Charlotte, Britain's Catherine, Duchess of Cambridge, Britain's Camilla, Duchess of Cornwall, Vice Admiral Timothy Laurence, Britain's Prince Charles, Prince of Wales, Britain's Princess Beatrice of York, Britain's Princess Anne, Princess Royal,, Britain's Queen Elizabeth II, Britain's Princess Eugenie of York, Britain's Lady Louise Windsor, Britain's Prince Andrew, Duke of York,, Britain's Prince Harry, Duke of Sussex,, Britain's Meghan, Duchess of Sussex, James, Viscount Severn and Isla Phillips stand with other members of the Royal Family on the balcony of Buckingham Palace to watch a fly-past of aircraft by the Royal Air Force, in London on June 8, 2019. - The ceremony of Trooping the Colour is believed to have first been performed during the reign of King Charles II. Since 1748, the Trooping of the Colour has marked the official birthday of the British Sovereign. Over 1400 parading soldiers, almost 300 horses and 400 musicians take part in the event. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
LONDON, ENGLAND - JUNE 08: Prince William, Duke of Cambridge with Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince Louis of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 8, 2019 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 08: Prince William, Duke of Cambridge with Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince Louis of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 8, 2019 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 08: Prince William, Duke of Cambridge with Catherine, Duchess of Cambridge and Prince Louis of Cambridge during Trooping The Colour, the Queen's annual birthday parade, on June 8, 2019 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
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