Tutu, effectively the leader of the liberation struggle during Nelson Mandela's long imprisonment, said he was "thrilled" by the "rare privilege and honour" of meeting the royals.
Indeed, it was quite a style statement as it was the 4-month-old's first official royal engagement when the family met with Desmond Tutu, the Archbishop Emeritus of Cape Town.
Archie was all smiles as he sat on his mother's lap during the visit, clad in a pair of striped dungarees, which cost $23 (£12.99) from H&M's conscious range.
Meghan still has a packed schedule in South Africa while Harry is away but she has a couple of days rest scheduled in as well.
Daly urges players to back their tackle technique
So far, the Rugby World Cup has been overshadowed by the issue of high tackles, beginning with Reece Hodge's hit on Peceli Yato during Australia's win over Fiji .
At a roundtable meeting with the Association of Commonwealth Universities, she will discuss the challenges faced by young women in accessing Higher Education.
Earlier in the day, the Duchess and her husband, Prince Harry, brought their adorable son Archie on an outing with them!
Archie in his mother Meghan Markle's arms.
The moment you've all been waiting for is finally here: Archie Mountbatten-Windsor has made his first appearance on the royal tour of South Africa.
It's easy to imagine the royal family as overly formal, especially when we usually see them at posh events and performing royal duties. "So we wanted to share something from our home to yours".
Now that Archie's getting a bit bigger, royal fans are all wondering when we can expect baby Sussex number two.
While the time at the beach marked the Duchess of Sussex's first time wearing a jean jacket as a member of the royal family, she's worn the same Madewell piece before.