Prince William (36) and Duchess Kate (37) can be proud of their wonderful children. It was Prince Louis's first birthday on 23rd April and he has grown up so much over the last year, he even has his first teeth. He looks as cute as a button in the photos of little Prince Louis released to mark his first birthday, wearing a gorgeous knitted jumper and grinning from ear to ear. It's hard to believe that his brother and sister are already five and three!

Prince George and Princess Charlotte were toddlers themselves just a few years ago. A photo of Prince George wearing a pair of blue dungarees was released to mark his first birthday in July 2014. 

Kensington Palace released the most adorable photos of Princess Charlotte in a pink dress to mark her first birthday in May 2016. 

It's easy to see that Prince George, Princess Charlotte and Prince Louis are siblings

Prince George, Princess Charlotte and Prince Louis are clearly related and all look very much alike. All three have light hair and dark eyes and know how to charm and disarm with a smile! They all seem to be active and adventurous children. Only time will tell however, whether they will grow up to look alike.

While Prince Louis has just turned one, the next generation of royals will soon be joined by a new addition! Prince George, Princess Charlotte and Prince Louis will soon have a cousin as Prince Harry (34) and Duchess Meghan's (37) baby will be arriving any day now!