Another iconic photo from Prince Louis at "Trooping the Colour"

Prince Louis had tons of fun at Trooping the Colour, but Prince George made sure to keep his little brother from going overboard at the royal event.

Members of the royal family stepped out in London on June 14 to honor King Charles at Trooping the Colour, the public celebrations of the monarch's birthday. Prince William and Kate Middleton were on hand with their children — Prince George, 11, Princess Charlotte, 10, and Prince Louis, 7 — first participating in the procession through the city before returning to Buckingham Palace for the event's grand finale: the balcony appearance to watch a flypast.

Prince Louis kept up his enthusiastic waving from the iconic landmark, even when the rest of the royals had paused. Although a video of the moment showed Prince William, 42, and Princess Kate, 43, looking at their youngest child with smiles, Prince George seemed to realize that no one else was waving. George appeared to tell his little brother to "stop" while quickly grabbing Louis' arm. Prince Louis took the hint, immediately putting his arms at his sides.

Despite his brother's warnings, Prince Louis got plenty of waves in during the King's birthday parade. While showing off his big smile — including two adult teeth growing in to fill in the gaps from his missing front teeth! — the young royal waved to the crowds lined up in London as he rode in a horse-drawn carriage during the procession.

Prince Louis waved to those gathered on the palace balcony as well, including mimicking his grandfather's gesture, and made sure to turn back and give one final goodbye before heading inside. He was photographed giving a wave over his shoulder as the family made their way off the balcony.

George shut him down!

I adore the Royals.

Louis is just practicing to be King.

I think Kate’s dress is awful, but she sure looks great in a hat.

Are we supposed to think it’s weird that George kept waving? I’ve seen comments in various websites claiming something is wrong with him, but I just don’t see it. Seems like a pretty normal kid to me.

This is still one of my favorites.

He’s Gay.

I watched the full coverage of the balcony. Louis discovered that when he waved the crowd cheered him. They stopped when he stopped, which was quite a good joke, so he did it twice. When he tried to do it a third time, George stepped in.

Charlotte was all, "I'm tired of having to be responsible for all of this. The future king can put in a bit of effort for once. I'm just going to stand over here and look regal."

That kid is another Harry in the making. Watch your back, George. Little punk.

R3 they adore you too!

Lil Bitches stole our act

That's a very mature 11.

So nice of them to wear red ties in honour of my birthday!!

I think the kids are cute & I like that Kate & Wills seem to be amused by Louis. His bossy siblings stepping in seems like typical kid stuff. Back in the day, the Queen probably would've scowled at the kid with Phillip giving him a slap in the back of the head. Whatever the case, I'll take this over Kim Jun Trump display

He’s… autistic. It’s quite obvious.

Diana was probably on the Spectrum. Harry’s unfortunate behavior can probably also be attributed to neurodivergence.

Mommy's dress matches with Charlotte, but I think matching the blue of Grandpa and Poppa's blue sashes would have been spectacular!