Prince George and Princess Charlotte's sweetest sibling moments

William and Kate released four photos of the royal siblings just a few weeks after Princess Charlotte was born. But this one of Prince George giving his little sis a kiss is just too cute to handle. You can already tell he’s going to be a protective big brother. 

Read more: New adorable photos of Prince George and Princess Charlotte—taken by Kate 

Hey, Lottie. What are you doing in there? 

Read more: Princess Charlotte’s christening—and the first family photo

When it came time for the official photos to mark Charlotte’s christening, the royal siblings were kind of over it. Please note Charlotte’s tiny fist. But George’s hair twirl is too cute.

Read more: Princess Charlotte’s official christening photos are here

Happy Christmas from George and Charlotte—oh yeah, Wills and Kate, too. Clearly George just wants to play with his train and Charlotte is stressed about being seen in public with just one shoe. Eeek, royal wardrobe malfunction!

Read more: First Christmas card from the Cambridges

George and Charlotte got to go on their first family vacation with Mum and Dad this past February. And they went skiing. Well, Wills and Kate did, anyway. The kids got to see snow for the first time. And clearly Charlotte was into it. It looks like she’s trying to escape Kate’s arms and is reaching for George as if to say, “Let’s play!” 

Read more: Prince George and Princess Charlotte play in the snow for the first time

Those adorable chubby cheeks run in the family! Also, George is giving some major shade to the photographer. Better not anger the future king!

To celebrare Her Majesty’s 90th birthday, a special photo was taken of the Queen with her youngest grandchildren and all her great-grandchildren. Ten-month-old Charlotte sat on the Queen’s lap, with Prince George to the left of his Gan-Gan (as he calls her). Also in the picture from the left are James, Louise, Mia, Savannah and Isla. What a sweet way to mark the Queen’s big day. 

In the fall of 2016, all four of the Cambridges embarked on a royal tour of Canada. This was Charlotte's first tour and George's second (he went to New Zealand and Australia when he was just a baby). The family got off the plane in Victoria wearing matching shades of blue and the royal siblings both looked adorable, but a little apprehensive at all the people waiting to greet them (it was midnight in London so they were both very tired). 

At a children’s party in Victoria, George and Charlotte had tons of fun. George discovered a fish bubble gun and was quick to blow some bubbles at his sister—much to her delight. 

As the family of four said goodbye to royal watchers in Victoria, Charlotte was all smiles and full of waves. But George was more into the airplane—he couldn’t wait to get on it. 

Prince Geoegre and Princess Charlotte both had important roles in their Aunt Pippa’s wedding. George, in green knickerbockers, was a page boy and Charlotte, rocking a flower crown, was a bridesmaid. As the siblings entered the church, Charlotte struggled to hold her heart-shaped flowers, but big brother George was quick to step in and help her. 

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Prince George is a wee bit confused by his age Princess Charlotte won't wear dresses till she's one