Prince Archie, the eldest child of Prince Harry and Meghan, the Duchess of Sussex, is celebrating his 6th birthday. Meghan took to Instagram Tuesday to mark her son's birthday, sharing a photo of Archie looking out at the ocean with the sun in front of him.

On Tuesday, May 6, Archie Harrison Mountbatten-Windsor, son of Meghan Markle and Prince Harry, celebrated his 6th birthday. Markle commemorated the special day on Instagram. Alongside a photo of Archie, standing on a balcony looking at the sun, Markle wrote, “Our son. Our sun. Happy 6th birthday to Archie!”