UPDATED: New Photos by Kate Mark a Weekend of Celebrations for the Cambridges

It's a double celebration for the Cambridges this weekend with tomorrow marking both Prince William's 38th birthday and Father's Day. To mark the occasion, Kensington Palace shared two lovely new photos of William sitting on a swing in the garden of Anmer Hall surrounded by his three children.

George, Charlotte and Louis are all clearly having a fabulous summer at Anmer and are all smiles in the images taken by the Duchess. Louis (who continues to resemble his mum more each time we see him) has grown so much!

Take a look at the expressions in this surprise additional shot.

You might remember the swing from Prince George's third birthday photos.

The swing was a wedding gift from Charles and Camilla made by the Oak And Rope Company. More from Hello!

'Jeanette Aurdal Nieman, designer and managing director, had no idea that the swing would feature in the portraits and it came as a welcome surprise.

"The first I knew of it was when a journalist rang to say that he had seen a photograph of Prince George on a wooden swing, and if it was one of ours," Jeanette told HELLO! Online. "I simply stated that it probably was, as I know he has one. The journalist went on to say that he thought I sounded very calm about it, and had I seen the photographs myself, as they were everywhere... I was running a bit behind packing for our family holiday... and had not..."

She knew that George owned a swing because Oak & Rope was commissioned to make one for Prince William and Kate's wedding in 2011 – something that made her "really excited".

"Even though we were a very young and small company then, I made the conscious decision not to discuss this with anybody, and made this clear to everybody working for Oak & Rope too," she said."It was a personal present, and we thought it deserved to remain a private matter."

Prince Louis wore a Gap Polo Shirt while Princess Charlotte was in sold out dungarees with a little Zebra emblazoned on it from John Lewis. George wore an olive green shirt by H&M (with thanks to UFO No More and Kate's Royal Closet).

I mentioned it's a double celebration for the Cambridges - well more correctly it's a quadruple one. Today was Michael Middleton's 71st birthday and tomorrow he and Carole celebrate a significant milestone - their 40th wedding anniversary. Normally, there would have been a family gathering or perhaps a party to celebrate the occasion, so undoubtedly this weekend will be filled with Zoom video calls and messages with plans for plenty of visits soon.

To mark Father's Day, KP shared a darling photo of Kate with her father as a child. Kate (looking every bit like Louis) wearing a check shirt and jeans, a look she still loves today. Michael looks so young in this shot.

And last but certainly not least, a fabulous new photo of William and Charles was released. It was taken by the Duchess, most likely at Sandringham, in December. Kate's photography skills continue to grow, this is a truly excellent image. I've said it before, I would love to see her put 100 images together featuring photos from the past decade in support of one of her patronages.

It's a very exciting weekend at Anmer Hall and judging by the photos William's birthday is going to be a lot of fun! Wishing the Prince a very Happy Birthday, and a wonderful Father's Day to all celebrating tomorrow!