The Duchess of Sussex returned to New York with husband Prince Harry to celebrate Nelson Mandela Day at United Nations headquarters on Monday. The couple kept things low-key, with Harry, 37, wearing a navy suit and Markle, 40, opting for a chic short-sleeved black dress. She accessorized with an oversized Mulberry blouse and black suede pumps as well as two rings from Chiffon. The “Suits” alum parted her hair down the middle in a low ponytail for her understated look as she watched the prince give a keynote speech. Meghan Markle wore a chic short-sleeved black dress to support Prince Harry at United Nations headquarters for Nelson Mandela Day. AFP via Getty Images Markle and Harry have been staunch supporters of Mandela’s work after meeting his widow, Graça Machel, in South Africa in 2019. The king’s late mother, Princess Diana, was also close to the civil rights activist before since her death. Indeed, Harry’s speech mentioned Diana’s work with Mandela. The couple arrived hand in hand.Anthony Behar/Sipa USA Nelson Mandela Day was officially recognized in 2009 to celebrate the leader’s legacy. This marks the first high-profile event for the couple since stepping down from their official royal duties in early 2020, apart from a quick appearance at Queen Elizabeth II’s Platinum Jubilee last month, bringing 3-year-old son Archie back in the UK. for the first time since he was a newborn and his 1-year-old daughter Lilibet on her first trip abroad. The couple will be back in the spotlight in the coming months as Harry is set to release a ‘juicy’ memoir. Anthony Behar/Sipa USA Royals will be in the spotlight more often in the coming months. Harry has a “juicy” memoir in the works that insiders told Page Six should make the royal family “nervous.”