The outspoken 69-year-old made her comments during an interview with Conrad Black on Canadian television. Described as the "Pushy Princess", she has making the headlines lately during a series of interviews for her latest book. More from Phil Dampier's exclusive story:
'When asked about William and Kate, she said: "Of course we're thrilled to have a beautiful young married couple with a baby. Let's hope there are more marriages soon because I think to have that young generation is terribly good for the people. The people love to see happy young people and I think the older generation are a bit boring for most people.'
Princess Michael of Kent also discussed the late Princess of Wales: "Like probably many people of little education who find themselves suddenly lauded by the whole world, it is very difficult if you have not had a mother bringing you up who was quite stern and strict. She did not have a mother bring her up and she did not have much education."
You can watch the interview in full here.
Royal biographer Lady Colin Campbell has described the interview as "quite wrong". I don't know about you, but I've always been fascinated with Her Majesty and don't think anyone could described her as boring.