The cutest pics of Kate Middleton & Prince William’s youngest son Prince Louis

The British royal family has been adding so many little ones in the past few years–and with the birth of Prince Louis in 2018, they just keep on growing. The clan has celebrated Prince Harry and Meghan Markle's wedding, the arrival of their baby boy ArchiePrince William and Kate Middleton's ninth wedding anniversary, and Queen Elizabeth's 94th birthday. But one of the most joyous moments they've shared with the British people was the arrival of the Duke and Duchess of Cambridge's third baby in April 2018.

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The royal family knows that all eyes are on them and their growing brood, and they do a great job at keeping their fans up to date, especially when it comes to their little ones. The royal pair and Kensington Palace have been sharing some adorable photos of the baby boy since he was born, and they're all honestly just too cute to handle. 

In case you need your daily dose of the royal family for the day, we have compiled Prince William and Kate's third child's best pics. From his first public appearance on the day of his birth to photos with his siblings and family portraits, click through for a look at the youngest royal's cutest moments so far!

Prince Louis turns 2!

Sharing a sneak peek of Prince Louis’ handiwork ahead of his second birthday! ," Kensington Palace shared in April 2020. "The Duke and Duchess of Cambridge are pleased to share new images of Prince Louis, taken by The Duchess this April."

His second birthday was so colorful.

The duchess takes such awesome pics of her baby boy! "Instagram vs Reality. Thank you for all your lovely messages on Prince Louis’ second birthday!" the caption read in April 2020. "The Duke and Duchess of Cambridge are very pleased to share new photographs of Prince Louis, taken by The Duchess this April."

Prince William kept his eyes on his baby boy.

The couple shared some photographs of their family when they visited the Royal Horticultural Society Back to Nature Garden at the Chelsea Flower Show on a Sunday afternoon in May 2019. Louis seemed to be enjoying the outing and ran happily around the garden that his mom helped design.

This pic of the duchess with her boy is the sweetest.

The kids got to enjoy the garden their mom decorated in May 2019, and Kensington Palace shared this post with some adorable pics. "Her Royal Highness is a strong advocate for the proven benefits the outdoors has on physical and mental health, and the positive impact that nature and the environment can have on childhood development in particular," the caption read. "Over the past months, Prince George, Princess Charlotte and Prince Louis have helped The Duchess gather moss, leaves and twigs to help decorate @The_RHS Back to Nature Garden."

Louis turns 1!

These portraits were taken of him and shared for his first birthday in April 2019. "Happy Birthday Prince Louis! The Duke and Duchess of Cambridge are delighted to share this new photograph of Prince Louis ahead of his first birthday tomorrow," the caption read.

Kate took these pics of her son.

He looked adorable in this pic his mom took of him when he was a year old. "The Duke and Duchess of Cambridge are delighted to share these new photographs of Prince Louis ahead of his first birthday tomorrow The photographs were taken earlier this month by The Duchess at their home in Norfolk,"‬ the caption read in April 2019.

He's already fulfilling his royal duties.

Here he was with his parents and siblings at his grandmother's birthday parade in June 2019. The caption read: "The Duke and Duchess of Cambridge, Prince George, Princess Charlotte and Prince Louis join The Queen and Members of @TheRoyalFamily to watch the @RoyalAirForceUK @RAFRedArrows fly past over Buckingham Palace, following Trooping the Colour, The Queen’s Birthday Parade."

Pics with grandpa!

Look how tiny he looks in this photo with his grandfather, Prince Charles, and his mom, Kate. Kensington Palace shared this sweet photo for Prince Charles' birthday in November 2019 and captioned it: "Wishing a very happy Birthday to The Prince of Wales!"

Louis made his big debut in front of the whole world.

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Kensington Palace/Instagram

The whole world stopped when Prince Louis was born on April 23, 2018. Paparazzi and fans waited outside of the St Mary's Hospital in London, England, for his parents to come out and introduce the royal baby to the world.

The Duke & Duchess of Cambridge looked absolutely delighted.

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Kensington Palace/Instagram

Kensington Palace shared this photo of the pair smiling from ear to ear after welcoming their third child. They were already parents to Prince George and Princess Charlotte at the time. Look at how peaceful Louis looks here in his mother's arms!

This close-up of the newborn was too cute for words.

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Getty Images

If there was a photo out there to give you baby fever, this one is it! This close-up of the newborn baby Louis leaving the hospital just hours after his birth is everything. Look at his tiny little face!

His full name is so beautiful.

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Kensington Palace/Instagram

Days after he was born, the couple announced the child's full name. "The Duke and Duchess of Cambridge are delighted to announce that they have named their son Louis Arthur Charles," the caption on the royals' page read. "The baby will be known as His Royal Highness Prince Louis of Cambridge."

Louis posed for the sweetest photo ever with his big sister.

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Kensington Palace/Instagram

Princess Charlotte's third birthday was on May 2 and she celebrated by posing for adorable photos along with her baby brother. She even gave him a sweet forhead kiss and it made our hearts melt! Charlotte is the cutest big sister.

Turns out Kate is quite the photographer.

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Kensington Palace/Instagram

Kensington Palace released this photo of the baby in May 2018, revealing that the royal mamá had snapped it. "This image of Prince Louis was taken by The Duchess of Cambridge at Kensington Palace on 26th April," they captioned it.

Prince Louis slept peacefully on the way to his christening.

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Kensington Palace/Instagram

A baby is going to sleep when a baby wants to sleep. The family arrived at St. James's Palace for Prince Louis' christening on July 9, 2018. Kate happily walked over to the priest with her baby boy sleeping in her arms.

The mom & son duo are just too adorable.

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Kensington Palace/Instagram

The baby wore a handmade replica of the Royal Christening Robe, made by the Queen's dressmaker, Angela Kelly. The Kensington Palace shared on Instagram that the original Royal Christening Robe, which is made of Honiton lace lined with white satin, was made in 1841 for the christening of Queen Victoria's eldest daughter, Victoria.

They are now a party of five.

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Kensington Palace/Instagram

Prince William walked in hand in hand with son Prince George and daughter Princess Charlotte. The two kids looked stylish in their cute outfits, while their uncle Prince Harry and Meghan walked in behind them.

Both sides of the baby's family posed for photos.

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Kensington Palace/Instagram

The royal family released some beautiful official portraits from the baby's christening on Sunday, July 15, which were taken by photographer Matt Holyoak. Kate's family, including pregnant sister Pippa Middleton, joined the royals for this snap.

The royals were all smiles as they surrounded the baby.

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Kensington Palace/Instagram

We love the outfit Kate wore to her boy's big day. This photo really shows what a gorgeous family they are. Prince George was cheesing hard for this pic celebrating his baby brother. Too cute!

We know this is supposed to be about Louis, but little Charlotte is fantastic.

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Kensington Palace/Instagram

The family of four posed for a gorgeous portrait on the day of Louis' christening and it came out so beautifully. Our girl Princess Charlotte already has so much personality, and it can't be contained!

This shot is gorgeous.

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Kensington Palace/Instagram

Kensignton Palace shared some gorgeous pics from Louis' christening. Kate and the baby posed for stunning mommy and me snaps in the garden at Clarence House. Baby Louis looks so alert in this picture with his mamá!

Prince Louis is so precious.

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Kensington Palace/Instagram

The 2-month-old was giving a full smile while cradled in his beautiful mom's arms in this photo from his christening. Look at his big smile! It's so sweet it really touches your heart.