Sarah Ferguson touches on relationship with Princess Diana: ‘we were so strong together’

Sarah Ferguson sat down for an interview with PEOPLE magazine and opened up about a promise she made to her late sister-in-law- Princess Diana.

Ferguson shared, “We promised each other we would always be together - there was never any daylight between us. But everybody wanted that because we were so strong together. People want to break something so strong.”

Ferguson further said, “She would be very proud of her sons and their wives, and she would be just like me, obsessed with her grandchildren. Because that's what she loved.”