ROYAL TOUR: Meghan Markle reveals her sweet nickname for baby Archie

The Duke and Duchess of Sussex are dazzling South Africa on their 10-day royal tour. But it's been the debut of their son, Archie Harrison, that's caught the most attention.

Meghan Markle and Prince Harry made a surprise appearance with their adorable five-month-old son at their meeting with South African anti-apartheid activist Archbishop Desmond Tutu at The Old Granary in Cape Town.

For his visit, the royal tot was dressed in striped overalls, a white shirt, and white socks - and his resemblance to Harry is undeniable.

During the meeting, the Duchess bounced her smiling son on her knee while Harry played with Archie's toes.

The seventh-in-line to the throne, who is starting to grow tufts of reddish hair, also clung to his grinning mother as the couple got up to say their goodbyes to the Archbishop.

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The Sussexes took to Instagram after the appearance to share a video in which Meghan can be seen holding Archie as the family of three entered The Old Granary.

But it was in this clip royal fans could hear Meghan revealing her sweet nickname for her little boy, as she nuzzles into him and say: "Oh Bubba!"

The visit marks the first time the couple have brought Archie into full view since his birth on May 6, 2019.

Harry is currently travelling to Angola, to pay homage to the work of his late mother Diana, who campaigned for landmines to be outlawed during a visit she made to the country in 1997, leaving his wife and young son in Cape Town for five days.

The family will be reunited in Johannesburg for the last leg on their trip.