Kate Middleton attended a state banquet, wearing a gold lace gown and a tiara, with some reports specifying it as Princess Diana's Spencer Tiara, although one outlet suggests the tiara will never be worn by Kate Middleton or Meghan Markle. The event was a formal occasion where Middleton's fashion choice was noticed. The details of her outfit and its significance are being discussed by various outlets, with some also referencing other royal fashion moments and Princess Diana's iconic style.