Tagging Kensington Palace in her series of tweets, the 53-year-old continued, "Glad you have so much time to gallivant around paying tribute to others while ignoring your own father!" A specially curated programme of historic artefacts, photographs and film is on show at the Southbank Centre's Queen Elizabeth Hall in tribute to Mr Mandela on the centenary of his birth. "I just started Googling right away and looking, and I was in awe of how she looked".
He has given a number of interviews since, largely with TMZ and one famously with Good Morning Britain, during which he relayed details of private conversations with his daughter and her new husband Prince Harry.
The Duke and Duchess of Sussex also meet Nelson Mandela's granddaughter Zamaswazi Dlamini-Mandela @southbankcentre before viewing the @Mandela100UK exhibition. "Enough is enough. Act like a humanitarian, act like a woman".
Given his comments in the recent Sun story, it's unlikely the Duchess is laughing at her father's antics.
Mulberry is a brand embraced by the royal family and the Duchess of Cambridge has plenty of the English heritage brand's bags in her collection. "The Royals are an embarrassment for being so cold", she wrote.
The attack comes after Meghan's father said he would not stop doing interviews with the media until his daughter accepts him back into her life. "You should be ashamed of yourselves @KensingtonRoyal". "It would also be sad to see Meg's dreams broken if she were to fail in her new position and disappear from the royal family".
According to Lord Hain, the work was curated by the Apartheid Museum in Johannesburg, South Africa, and the Duke and Duchess were invited because of Prince Harry's charity work in southern Africa.
"Apparently, that interview put the Royal Family in their silence mode ... so, I gave another interview to break the silence". I'd find a hotel room and try to reach them. I don't like the one I'm seeing now.
This meant he wasn't able to attend the wedding or walk his daughter down the aisle at St George's Chapel, which he's since said he was very upset about but grateful to Prince Charles for filling in in his place.