Kate Middleton has changed after welcoming her youngest son, Prince Louis.

The Duke and Duchess of Cambridge welcomed their third child, Prince Louis, in April 2018. After becoming a mom of three, something in Middleton changed.

According to body language expert Judi James, Middleton’s perfect smile suggests a more “genuine” delight.

“It’s now often a more relaxed-looking smile that borders on a laugh, with her mouth held open and cheek dimpling on display,” James said.

“She looks relaxed about her two other children as well, as though needing to worry less as they grow older, and she looks enchanted by the very confident and happy-looking Louis.”

On Saturday, Prince Louis made his Buckingham Palace balcony debut during Trooping the Colour. The little tot stole the show with his adorable wave. Many also noticed that Princess Charlotte was so good at it.

James pointed out that the two royal kids’ waving suggests that their mom is training them for their royal role and making it fun for them at the same time.

During the event, Middleton was seen trying to stop Prince Louis from doing his bad habit of sucking his thumb. However, the little tot was determined to do it and kept on putting his hand in his mouth.

Just recently, James also pointed out Middleton’s other changes compared to Prince William. According to her, the Duchess of Cambridge is now more confident and happy to do her own thing. The Duke and Duchess of Cambridge used to mirror each other’s pose, but on their last outing, Middleton changed her pose.

Also, her stretched out arm when giving handshakes suggests strength and confidence. Middleton was also photographed raising her thumb which means that she was having fun at the same time. On the other hand, James felt that Prince William is less assured.

Prince William and Middleton were recently plagued with infidelity rumors. There were speculations that Prince William cheated on his wife with their family friend Rose Hanbury. Here’s a timeline on how their alleged affair started.

However, despite the rumors, an insider said that the couple is not splitting. Middleton confronted her husband and Prince William just laughed it off because it was not true.

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