Meghan Markle and Prince Harry’s son is growing up. Archie celebrated his 6th birthday on May 6 and his proud mom shared a photo of the little prince to mark the special occasion. In the snapshot, Archie can be seen holding onto a deck railing as he stares into the distance to see the sun setting.

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.

The Duchess of Sussex has marked Prince Archie's sixth birthday with a touching tribute. Sharing a photograph of Archie silhouetted against a fiery sunset, Meghan captioned the image, "Our son. Our sun.