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:

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