There she is! 👑 #PrincessKate pulled out all the stops at the London premiere of Tom Cruise’s latest movie, 'Digger,' showing everyone how to wear fall’s hottest color trend. The Princess of Wales stunned in a regal purple jennypackham gown, but the real star of the show was the Queen Mother’s historic amethyst and pearl necklace, accented by Princess Diana’s pearl drop earrings. Get a detailed look at the link in our bio. Photos: Getty Images