India, June 13 -- Kate Middleton appeared to pay tribute to Princess Diana during Trooping the Colour 2026 with a carefully coordinated fashion choice, and Princes George and Louis subtly joined in on the royal moment.

The Princess of Wales stepped out at Horse Guards Parade in London on June 13 for King Charles III's official birthday celebrations wearing an icy blue Catherine Walker coatdress with white detailing, structured shoulders, and a cinched waist. The ensemble drew comparisons to one of Princess Diana's memorable Catherine Walker outfits from Easter 1987.

According to InStyle, the similarities between the two royal looks were hard to miss. Both outfits featured nearly identical pastel blue shades, white trim accents, and simi...