Kate Middleton forced to stop son Prince Louis from doing this bad habit.

On Saturday, Prince Louis made his debut at Buckingham Palace balcony for Trooping the Colour. He stole the show with his adorable wave but many also noticed the tot’s habit of sucking his thumb like most of the kids his age do.

In a clip shared on Twitter, Prince William can be seen carrying Prince Louis who is sucking his thumb. Middleton tried to stop her son from doing so by holding his hand down, but the little prince knew what he wanted and kept on doing it.

“Let me alone woman! I just want to suck my thumb! He’s definitely a prince who knows how to defend his rights,” the funny caption read.

A number of netizens found the video hilarious. The user who shared the clip said that every time she watches it, she notices something new.

Meanwhile, other netizens also recognize Princess Charlotte’s wave. One online user said that Prince William and Markle’s only daughter “waves like a windshield.”

Princess Charlotte sported two hairstyles at the event. She was first seen gazing out the window with Prince George and Prince Louis with her hair pulled back off her face. She sported a cute blue bow which sat neatly on the top of her head.

However, when she joined the members of the royal family on the balcony to watch the RAF flypast, Princess Charlotte donned a completely different hairstyle. The blue bow was gone. Instead, she sported a middle parting with a pretty half-up do with the rest of her hair falling loosely down her back.

In related news, many noticed that Middleton sported a sparkling new necklace. The Duchess of Cambridge’s bling was similar to the one she wore in 2011 because it features a cross pendant. However, it has an extra diamond fixing and has a slightly different chain.

Prince William, Middleton, Prince Harry and Meghan Markle reunited at the said event and they seemed amicable. However, according to an insider, the Sussexes and the Cambridges had a shocking showdown and they didn’t talk when they were away from the camera.

Prince William Kate Middleton and Prince Louis
Pictured: Prince William and Middleton pose for photographers with their newborn baby boy Prince Louis of Cambridge outside the Lindo Wing of St Mary's Hospital on April 23, 2018 in London. Getty Images/Dan Kitwood