Happy Birthday AND Father's Day, Prince William!

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Today is very special for Prince William -- in more ways than one!

Not only does the Duke of Cambridge get to celebrate Father's Day as a new dad of two, he also gets to have his cake (and ice cream, too!) in honor of his 33rd birthday. And that's not all -- to add to the festivities, today marks the 35th wedding anniversary of the Duke's in-laws, Michael and Carole Middleton.

PHOTOS: Prince George's Most Adorable Moments

No word on how the royal family plans to celebrate their special day, beyond that it will be spent "privately." And perhaps with a few homemade cards courtesy of little Prince George? After all, while contributing to a Portsmouth mural, Princess Kate Middleton recently revealed that she'd been practicing fine arts (namely painting) with the royal toddler, who is just shy of his second birthday.

In honor of William's very special day, let us take a look back at the Duke's sweetest moments as a proud father to Prince George and Princess Charlotte:

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The Duke and Duchess release the first baby photos of Prince George taken by Kate's father Michael in the garden of the Middleton family home in Berkshire -- their dog Lupo, included!

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Prince William looks on as his son gets christened in London three months after his birth.

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Prince George enjoys a jaunt around the Natural History Museum and explores the "Sensational Butterflies" exhibit with his parents.

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George starts walking on his own shortly before his first birthday!

The Duke and Duchess of Cambridge visit Australia with their son.

Vanity Fair

Prince George lands his first Vanity Fair cover!

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The royal family reveals Prince George's official Christmas photos taken in the courtyard of Kensington Palace, and people around the globe coo a collective, "Awwwww!"

Shortly after her birth, the new family of four introduces Princess Charlotte of Cambridge to the world.

PHOTOS: Princess Charlotte's First Pics

The duke and his son greet the public and media as William brings George to meet his new little sister for the first time!

Shortly after participating in a charitable polo match, Prince William was gifted with a sweet pair of teeny tiny pink galoshes for Charlotte.

Prince George makes his first appearance on the famous Buckingham Palace balcony during the Queen Elizabeth's annual birthday parade, Trooping the Colour. He even wore the exact same outfit as his dad did during William's balcony debut back in 1984.

The first photos of George and Charlotte together were taken at home by Kate!

With cuties like these two in the Palace, how could Prince William not have a wonderful birthday?

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