Prince Louis Wears Go-to Uniform in 6th Birthday Portrait — and Other Details You May Have Missed

Princess Kate hopped behind the camera for her youngest son's birthday photo, taken in a favorite setting

Prince Louis is officially 6 — and there's lots to love about his new birthday photo.

On April 23, Kate Middleton and Prince William released a new portrait of their youngest son to mark the milestone. The smiling close-up of Prince Louis, recently taken by Princess Kate in Windsor, has lots of Easter eggs for royal fans to spot.

Prince Louis appears to be wearing his go-to uniform: shorts! It’s typical for upper-class boys in Britain to wear shorts in their younger years, and Prince Louis even sported shorts on Christmas for the royal family’s holiday walk to St. Mary Magdalene Church at Sandringham in December 2022 before switching to tartan pants last year.

Prince Louis’ checked button-down shirt is also a staple of his wardrobe, including past birthday portraits, though it's sometimes topped with a sweater. His top is also reminiscent of the shirt his big brother Prince George wore for his 10th birthday portrait taken by photographer Millie Pilkington, released in July 2023.

Related: Happy Birthday, Prince Louis! All About Kate Middleton and Prince William’s 6-Year-Old Son

The Prince and Princess of Wales’ youngest son also sported a shorter haircut as compared to when he was last seen at Christmas and might be missing a bottom tooth! The little prince was all smiles for the birthday photo taken by his mother, where he leaned on his arms while lying on a blanket in the grass.

Princess Kate, 42, is known to often hop behind the camera for her children’s birthdays and often takes the pictures outside. Prince George, Princess Charlotte and Prince Louis’ birthdays make for ideal outdoor shoots, as they were all born in the spring or summer months.

Prince William and Princess Kate shifted tradition regarding the release of Prince Louis’ 6th birthday photo and shared the shot to social media on their son’s birthday for the first time. In years past, the royal couple published birthday portraits on Prince Louis’ birthday eve.

"Happy 6th Birthday, Prince Louis! Thank you for all the kind wishes today," read the caption from Prince William and Princess Kate, with photo credit to the Princess of Wales.

Related: Why Kate Middleton Waited Until George, Charlotte and Louis Were Off from School to Share Cancer News

It was unclear whether the couple would share a new picture for Prince Louis’ birthday amid the family’s appeal for privacy as Princess Kate undergoes treatment for cancer.

PEOPLE understands that the Prince and Princess of Wales decided to release the image as a way of thanking well-wishers who have reached out to wish Prince Louis a happy birthday.

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The photo has not been edited, PEOPLE understands. Last month, Princess Kate apologized for editing a photo taken by Prince William of her with their children to mark Mother's Day in the U.K. on March 10. The image was significant as the first official picture of Princess Kate amid her private recovery following her abdominal surgery in January.

Prince George, Princess Charlotte and Prince Louis recently returned to the classroom following a break around the Easter holiday and might mark Louis’ birthday in a sweet way at home: cake baked by Princess Kate.

"I love making the cake," the Princess of Wales said on A Berry Royal Christmas in 2019. "It's become a bit of a tradition that I stay up 'til midnight with ridiculous amounts of cake mix and icing, and I make far too much. But I love it."

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