Prince HarryandMeghan Markleare ready to celebrate their royal nephew.

The newlyweds arrived for theroyal christeningof their nephew,Prince Louis, on Monday. Meghan and Harry joinedPrince WilliamandKate Middletonfor the ceremony at the Chapel Royal at St. James’s Palace in London, which is also whereMeghan was baptized earlier this year.

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Prince Louis christening

Prince Louis christening

Meghan and Harry included George and Charlotte in their wedding party in May, which gave Meghan the chance to get to know her niece and nephew even better. When Harry and Meghan were taking theirfamily portraitson the big day, they gravitated toward 4-year-old George, who served as apage boy, and his 3-year-old sister, Charlotte, one of thebridesmaids.

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“They wanted to see their family and see the kids and be together,” Meghan’s longtime friend and makeup artist Daniel Martintold PEOPLE. “So when it was time to take a photo, it was really easy and harmonious and joyful, and Harry was playing with the kids.”

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Since Harry and Meghan and neighbors with Will and Kate at Kensington Palace, the newlyweds have had even more opportunities to spend time with the children.

The couple has a busy week ahead. On Tuesday, they are heading to Dublin for their next big outing. They will spend two days in the Irish capital, which will include a trip to Guinness Storehouse. Harry and Meghan will also head to Australia, Fiji, the Kingdom of Tonga and New Zealand in the fall for theirfirst royal tour as a married couple.

During Meghan’s first solo outing withQueen Elizabethlast month, shedished on married life, telling a crowd of fans, “It is wonderful. I’m really enjoying it.”

She added: “He’s the best husband ever.”

source: people.com