Meghan Markle and Kate Middleton are about to make a rare public appearance together at Westminster Abbey following “Megxit.” Joining them will be their respective husbands, Prince Harry and Prince William, along with Queen Elizabeth II, Prince Charles, and Duchess Camilla, Buckingham Palace has confirmed.

ET Online reports that the royals will meet up for Commonwealth Day on March 9. The British royal family members all attended last year's event, including Meghan, the Duchess of Sussex, when she was pregnant with son Archie, now 9 months.

Commonwealth Day takes place on the second Monday of March in the U.K. and celebrates the Commonwealth of Nations. The Queen generally gives an address to the nation during this time.

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Royals Meghan Markle and Prince Harry are pictured. Mark Jones/Licensed

The Sun reports that not only is this the first time that the Duke and Duchess of Cambridge have attended an event with Meghan Markle and Prince Harry since their Megxit departure, it’s also the very last official event Meghan and Harry attend as senior royals. As previously reported, the couple stepped down from their positions earlier this year in favor of living privately in North America.

Prior to the Commonwealth Day celebration, Meghan will be joining her husband at the Endeavor Fund Awards on March 5 and at the Mountbatten Music Festival on March 7.

Recently, Prince Harry has been rather busy just on his own, going back and forth between the U.K. and Canada. He previously attended an eco-tourism summit in Scotland. The Prince also stretched his vocal cords lately with rocker Jon Bon Jovi, as the two collaborated on a song late last month. All proceeds of their song will go to the Invictus Games.

Meanwhile, Kate and Prince William are also busy. During part of Meghan and Harry's U.K. return, the royal couple will be spending three days in Ireland on March 3-5.