The prince s 33rd birthday, Father's Day and his parents-in-law's 35th wedding anniversary all fall on Sunday

By Simon Perry
Updated June 19, 2015 11:20 AM
Chris Jackson/Getty

From the palace to the polo field, Princess Kate and son Prince George are breaking tradition and changing the Royal rules. Subscribe now for an inside look at their adorable adventures only in PEOPLE!

It’ll be a festive weekend for Prince William and family!

The new dad is set for double the fun with his 33rd birthday and Father’s Day falling on the same day.

On top of that, his in-laws Michael and Carole Middleton are marking their 35th wedding anniversary on June 21, too.

Carole, 60, and her husband, 65, have a lot to celebrate with the recent birth of their first granddaughter, Princess Charlotte.

“[Carole] is one very happy granny,” a source told PEOPLE.

And William s Father s Day will be twice as special now that he s a dad of two. There is no word from the palace on how William is celebrating his birthday and Father’s Day, beyond that it will be spent “privately.” His presents are likely to remain a secret, but wife Kate, 33, will surely involve Prince George in the preparations. She talked about the little royal s budding artistic streak when she revealed that she s been painting with George, so dad could have a few homemade cards in store for him!

William and Kate have had a lot of quality family time recently – the couple spent much of last weekend at Highgrove House – William’s father’s family home in Tetbury. And George enjoyed playing on the grassy sidelines of his dad s polo match June 14 with proud Grandpa Charles watching, too.

William also has a special bond with his father-in-law Michael – who will be doing his own celebrating on Sunday for his wedding anniversary.

William was heard jokingly referring to Mike as ‘”dad” during a family skiing holiday before William and Kate were married, and he loves hanging out with the Middletons, regularly vacationing with them at Mustique and in the Alps.

At his engagement announcement press conference in November 2010, William praised their support, saying, “Mike and Carole have been really loving and caring and really fun.”

But now that they have a family of their own, William and Kate’s lives are more complete. As they plan the upcoming christening of little Charlotte on July 5, a friend told PEOPLE recently William is clearly loving fatherhood – even though he admitted to enjoying a “week of from nappies” during his sprint of royal engagements last month.

He is “tickled pink” about being a dad, a friend says. “He speaks with a broad smile and says it’s lovely.”

For much more on Princess Kate’s sweet bond with Prince George – and how they’re both changing the royal family – pick up this week’s issue of PEOPLE, on newsstands Friday.

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