"Happy 6th Birthday, Prince Louis! 🎂," the royals captioned photo. "Thank you for all the kind wishes today." Princess Kate, Prince William's kids have upcoming birthdays The next of William ...

"Happy 6th birthday to Archie ... was born on May 6, 2019. Princess Lilibet, born Lilibet Diana Mountbatten-Windsor, was born on June 4, 2021. Meghan's birthday tribute comes just days after ...