William and Kate Will Leave Louis At প্রথমপাতা For Harry and Meghan's Wedding 

Kate Middleton to Step Out 4 Weeks Postpartum at Royal Wedding — But Baby Louis Will Stay Home

Kate Middleton will attend the wedding of her brother-in-law, Prince Harry, and sister-in-law-to-be, Meghan Markle, at Windsor Castle on May 19.

In a press briefing on Friday, Kensington Palace confirmed that Kate, 36, will join the wedding festivities — her first scheduled appearance since welcoming son Prince Louis, her third child with Prince William, on April 23.

The palace also confirmed that Prince Louis, who will be nearly four weeks old at the time of the wedding, will remain home — but his older siblings, 4-year-old Prince George and 3-year-old Princess Charlotte, are expected to play a part.

Watch the full episode of Raising a Royal streaming now on PeopleTV.com, or download the PeopleTV app on your favorite device.

Prince George, Princess Charlotte and their mom, Princess Kate, at Pippa Middleton\'s wedding on May 20, 2017.

The royal brother and sister have previous flower girl and page boy experience, having filled those roles at their Aunt Pippa Middleton’s wedding last May.

RELATED VIDEO: Prince William and Kate Middleton Reveal Their Royal Baby Boy’s Name!

Although Harry has chosen big brother Prince William as his best man, Meghan has decided not to have a maid of honor.

“She has a very close-knit circle of friends and she didn’t want to choose one over another,” palace spokesman Jason Knauf said on Friday. “All have been actively involved in helping her prepare for the day and will be there in the days beforehand. She’s very happy to have their support.”

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