The world watched Prince William grow up [1], and now we are witnessing the same with his children [2]. Ever since becoming a dad to Prince George back in 2013, it's hard not to swoon over Will when he's out on daddy duty [3]. Since welcoming Princess Charlotte in 2015 and Prince Louis earlier this year, the 35-year-old has joked "thrice a worry, [4]" but something tells us the Duchess of Cambridge's husband [5] is loving being a dad now more than ever. Keep reading to see William's cutest dad moments over the years, which can only be classified as royally sweet.
William could barely contain his excitement during the birth of Louis [7] in April.
William was overjoyed when he took George and Charlotte to meet their new sibling.
William made his debut as Louis's dad at St. Mary's Hospital in England next to Kate.
William opened the door for Charlotte at Prince Harry's wedding [8] in May like the gentleman that he is.
In 2016, William watched an aeroplane fly by with George, because it's the little moments that count.
William and Charlotte kept close during a family ski trip in France.
William hugged George tightly during a children's party for military families.
The proud dad was all smiles for their first portrait as a family of four.
William helped George down the steps as the royal family began their royal tour of Canada in 2016.
Even Charlotte couldn't resist her father's charm during the annual Trooping the Colour event that same year.
William came to the rescue to cure George's case of the blues.
George and William took a stroll, and we couldn't name a more adorable duo.
The royal family shared a laugh at 2016's Trooping the Colour, and we wondered why our invite got lost in the mail.
Who could forget that time William and the gang bundled up for a sweet family photo?
William carried George in his arms after attending Charlotte's christening.
Will melted hearts with his two children in this gorgeous family photo.
He made silly faces with George at the zoo, and we didn't know which of the two we'd rather be.
William had the look of love down staring at his newborn daughter, Charlotte, in 2015.
He was smiling from ear to ear at the sight of George.
What's cuter than George playing with William's polo hat?
William was proudly outshone by his dapper baby boy at his christening.
He taught George how to wave to the crowd like the future king that he is.
He carried baby Charlotte out of the hospital, and Kate couldn't look more in love.
Will planted a big kiss on George at St. Mary's Hospital in 2015.
He proudly showed off his baby boy to the world.
William and George both had matching facial expressions departing New Zealand in 2014.
Will looked cool, calm, and collected in the first family portrait after George's birth.
It was love at first sight for William holding newborn George in 2013.
He showed George a butterfly, and BRB, there's something in my eye.
William had a permanent smile on his face after the birth of Charlotte.
He took George to see a zoo exhibit in Sydney, Australia, in 2014.
He skillfully held on to George as they arrived at an airport in 2014.
Will and George were twin spectators at Trooping the Colour in 2015.
He snuggled up with George in Australia.
He made time to have a father-son chat with George [9] at a Polo match in 2015.
William made Charlotte crack a smile at a children's party for military families.
William watched the annual Trooping the Colour parade from the balcony with his family in 2017.
Kate and Will brought along their kids for their royal tour in Germany.
He held onto George's hand as he attended his first day of school [10].
He looked on with pride as George handled his first day of school like a pro.
William helped George down the steps at Harry and Meghan's royal wedding in May.
The happy dad caught a case of the giggles on the balcony of Buckingham Palace at Trooping the Colour in June.