The powder blue gown Princess Diana wore on the red carpet at Cannes in 1987 was not simply a beautiful dress, it was a carefully constructed tribute to a woman who had See Princess Beatrice's Bump Hugging Velvet Blazer What's next for Beatrice and Eugenie rejected by the royals? Princess Diana's Iconic Blue Cannes Dress & More Royal Style [PHOTOS] Princess Beatrice Brings a Pop of Crimson in Beulah London Dress to Buckingham Palace Garden Party With Princess Eugenie Princess Beatrice dazzled in a maroon printed dress with a burgundy long coat as she joined the royal family at Together at Christmas Carol Service in Westminster Abbey. The princess is pregnant