01of 25Middleton Family/Clarence House via GettyPrince WilliamandKate Middletonmet as students at the University of St. Andrews in Scotland – and posed together for this sweet photo at their 2005 graduation.
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Middleton Family/Clarence House via Getty

Prince WilliamandKate Middletonmet as students at the University of St. Andrews in Scotland – and posed together for this sweet photo at their 2005 graduation.
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Kate Middleton and Prince William.Chris Jackson/Getty

03of 25Chris Jackson/GettyHere come the royal bride and groom!Prince Williamand Katetied the knotin a fairy tale wedding on April 29, 2011, at Westminster Abbey in London.
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Chris Jackson/Getty

Here come the royal bride and groom!Prince Williamand Katetied the knotin a fairy tale wedding on April 29, 2011, at Westminster Abbey in London.
04of 25Chris Jackson/AFP/GettyOn December 3, 2012, it was announced thatKate and Williamwere expanding their family. The pregnancy announcement was made earlier than usual as she had been admitted to the hospital suffering from hyperemesis gravidarum, a severe form of morning sickness.
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Chris Jackson/AFP/Getty

On December 3, 2012, it was announced thatKate and Williamwere expanding their family. The pregnancy announcement was made earlier than usual as she had been admitted to the hospital suffering from hyperemesis gravidarum, a severe form of morning sickness.
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06of 25Michael Middleton/Kensington Palace/Getty ImagesA family photo taken shortly after George’s arrival included the family dog, Lupo.
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Michael Middleton/Kensington Palace/Getty Images

A family photo taken shortly after George’s arrival included the family dog, Lupo.
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John Stillwell - WPA Pool /Getty Images

08of 25Samir Hussein/WireImagePrince Georgejoined his parents for his first-ever tour in April 2014, when the family headed to New Zealand and Australia. Of course, he stole the show everywhere they went!
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Samir Hussein/WireImage

Prince Georgejoined his parents for his first-ever tour in April 2014, when the family headed to New Zealand and Australia. Of course, he stole the show everywhere they went!
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10of 25Matt Dunham - WPA Pool /Getty ImagesPrince Georgemade sure to check on his little sister at her July 2015 christening, standing on his tip toes to peek into her carriage.
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Matt Dunham - WPA Pool /Getty Images

Prince Georgemade sure to check on his little sister at her July 2015 christening, standing on his tip toes to peek into her carriage.
11of 25Chris Jelf/Kensington Palace/GettyPrincess Charlotteshowed off her royal smile in a candid family photo released in October 2015.
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Chris Jelf/Kensington Palace/Getty

Princess Charlotteshowed off her royal smile in a candid family photo released in October 2015.
12of 25CHRIS JACKSON/GETTYPrincess Charlottemade herroyal tour debutwhen the family headed to Canada in Sept. 2016. They arrived in perfectly coordinated blue outfits.
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CHRIS JACKSON/GETTY

Princess Charlottemade herroyal tour debutwhen the family headed to Canada in Sept. 2016. They arrived in perfectly coordinated blue outfits.
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Prince George, Kate Middleton, Princess Charlotte and Prince William in Canada, 2016.Sam Hussein/WireImage

14of 25Chris Jackson/Getty ImagesThe family of four enjoyed the Trooping the Colour celebrations in June 2017 from the Buckingham Palace balcony.
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Chris Jackson/Getty Images

The family of four enjoyed the Trooping the Colour celebrations in June 2017 from the Buckingham Palace balcony.
15of 25Samir Hussein/WireImageThe fab four was out on tour again in July 2017, this time visiting Poland and Germany.
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The fab four was out on tour again in July 2017, this time visiting Poland and Germany.
16of 25Chris Jackson/Getty Images/PA WireAn official portrait of the foursome in coordinated light blue ensembles served as their 2017 Christmas card.
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Chris Jackson/Getty Images/PA Wire

An official portrait of the foursome in coordinated light blue ensembles served as their 2017 Christmas card.
17of 25Growing again!Prince Louiswas born on April 23, 2018, officially making them a family of five.
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Growing again!Prince Louiswas born on April 23, 2018, officially making them a family of five.
18of 25Andrew Matthews/WPA Pool/GettyAlthough little Louis stayed home, the rest of the family was all smiles forMeghan MarkleandPrince Harry’s May 2018 wedding.
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Andrew Matthews/WPA Pool/Getty

Although little Louis stayed home, the rest of the family was all smiles forMeghan MarkleandPrince Harry’s May 2018 wedding.
19of 25PA Images/SipaPrince Louis' christening in July 2018 served as their first outing as a family of five.
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PA Images/Sipa

Prince Louis' christening in July 2018 served as their first outing as a family of five.
20of 25Matt PorteousKate andPrince Williamopted for a casual portrait featuring their three children enjoying the outdoors as their 2018 Christmas card.
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Matt Porteous

Kate andPrince Williamopted for a casual portrait featuring their three children enjoying the outdoors as their 2018 Christmas card.
21of 25Prince William, Kate Middleton, Prince Louis, Prince George and Princess Charlotte.BBCAmid the coronavirus pandemic — and onPrince Louis' second birthday! — the family of five stepped out to give a round of applause to frontline workers around the U.K. and give the world a glimpse of their children growing up.
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Prince William, Kate Middleton, Prince Louis, Prince George and Princess Charlotte.BBC

Amid the coronavirus pandemic — and onPrince Louis' second birthday! — the family of five stepped out to give a round of applause to frontline workers around the U.K. and give the world a glimpse of their children growing up.
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Princess Kate,Prince Williamand their three kidswalked the red carpetin Dec. 2020, when they attended a pantomime performance at the London Palladium. Little Louis looked around him in awe at all the activity while holding his mom’s hand, then took a seat on Kate’s lap to watch the show.
23of 25For their 2021 Christmas card photo, Kate andPrince Williamchose a family portrait taken during a private vacation in Jordan.
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For their 2021 Christmas card photo, Kate andPrince Williamchose a family portrait taken during a private vacation in Jordan.
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The family gathered on the Buckingham Palace balcony in June 2022 to celebrate a big royal event:Queen Elizabeth’s Platinum Jubilee, marking 70 years on the throne.
25of 25Prince William, Prince George, Princess Charlotte, Prince Louis and Kate Middleton.Samir Hussein/WireImageUpon the death ofQueen ElizabethII in Sept. 2022,Prince Williamand Kate became the Prince and Princess of Wales. They made their Christmas Day debut with their new titles alongside their three children three months later.
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Prince William, Prince George, Princess Charlotte, Prince Louis and Kate Middleton.Samir Hussein/WireImage

Upon the death ofQueen ElizabethII in Sept. 2022,Prince Williamand Kate became the Prince and Princess of Wales. They made their Christmas Day debut with their new titles alongside their three children three months later.
source: people.com