One of the greatest mysteries about Princess Diana's style has been the circulating photos of her inexplicably wearing a Philadelphia Eagles varsity jacket in the '80s and '90s. It's hard to imagine her distinct charming voice whisper, "Go, Birds!" but it is fun. Did she ever utter the phrase?
Probably not. The story of the jacket can be traced back to the funeral of a Philadelphia native, Princess Grace of Monaco, in 1982. Jack Edelstein, a statistician and spotter for the Eagles radio network, was in attendance, because he was friends with Grace Kelly's brother, Jack Kelly.
 
He and Diana struck up a conversation, which he recounted to the Philadelphia Daily News after Diana's death in 1997. "She thought football was like soccer," he said. "She asked, 'What are your colors?' I said, 'Green and silver.' She said, 'Those are my favorite colors.'"
She was also charmed by the Eagles' graceful logo, and Edelstein promised to send her some T-shirts. The owner of the Eagles at the time, Leonard Hyman Tose, thought a custom jacket would be more fitting. After receiving it, she sent Edelstein "a very nice note" about "how she'd been wearing it around."