Prince Louis Plays on the Beach in New Birthday Portraits

Happy birthday, Prince Louis! Kate Middleton and Prince William's youngest son turns 4 on April 23, and to mark the special milestone, the royals released a series of new portraits on Friday. In the adorable snaps, Louis is shown having the best time while playing on the beach. "4 years old tomorrow!" the Duke and Duchess of Cambridge wrote on Instagram.

According to People, the photos were taken by Middleton earlier this month near their home in Norfolk. It's become tradition for Middleton to take her children's birthday portraits. She's done the same in the past with both Prince George and Princess Charlotte, who recently made their royal Easter debut.

For Louis's 3rd birthday last year, the family released a portrait of the prince on his first day of preschool at Willcocks Nursery School, which is the same school his sister, Princess Charlotte, attended. For his 2nd, Louis was photographed doing some arts and crafts while making rainbow-colored paintings in support of National Health Service (NHS) workers and other essential workers fighting the coronavirus pandemic. And in his 1st birthday, Middleton photographed her son outside of their home in Norfolk.

How time flies! See all of Louis's 4th birthday portraits ahead.