Prince Harry and Duchess Meghan‘s son, Archie Mountbatten-Windsor, is happily adjusting to his new role as big brother.

The Duke and Duchess of Sussex’s two-year-old son is “very happy to have a little sister,” a spokesperson for the royal couple told People. The two welcomed their second child, Lilibet “Lili” Diana Mountbatten-Windsor, into the world on June 4 and announced the news two days later.

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“They prepared Archie by talking a lot about the baby. He is too little to understand though,” a source added to People. “He is big enough though that he is now starting to have his own life too. He enjoys preschool and outdoor activities. He will have a fun summer. Meghan and Harry are also taking time off to focus on their family.”

The Sussexes expressed their joy over their new baby girl in a post on the Archewell Foundation website over the weekend. The announcement also revealed that the proud parents would be taking parental leave—just like other employees who work for their nonprofit foundation—as they settle into their new life as a family of four.

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“On June 4th, we were blessed with the arrival of our daughter, Lili. She is more than we could have ever imagined, and we remain grateful for the love and prayers we’ve felt from across the globe,” the couple wrote in their note. “Thank you for your continued kindness and support during this very special time for our family.”

This article first appeared in Harper’s BAZAAR US