The REAL Duchess, Fergie, real name Sarah Ferguson, (whew) says she has not spoken with Prince WIlliam or Prince Harry since a year before Diana died.

Fergie says about meeting again with Diana's sons, "I'd like to - we had lovely times together - but I don't want either thinking that I'm trading on my friendship with them, pushing myself on them, though I'll always stand by the boys 100 per cent..They've grown up exceptionally well - leaders, role models."
Fergie claims that their tiff may have started after she mentioned in an autobiography that she got planter's warts from wearing Diana's shoes, although she doesn't really know for sure.
"And the saddest thing, at the end, we hadn't spoken for a year, though I never knew the reason, except that once Diana got something in her head... I tried, wrote letters, thinking whatever happened didn't matter, let's sort it out.
"And I knew she'd come back. In fact, the day before she died she rang a friend of mine and said, 'Where's that Red? I want to talk to her'."
Spicy
Source: DailyMail