Royal Purple Makes Kate Middleton a Showstopper Before Glitzy Dinner. 

Kate Middleton is the fashionable Princess of Wales.

The 40-year-old joined Prince William in extending a warm welcome to the president of South Africa during King Charles III's first official state visit.

Kate dressed a plum-colored Emilia Wickstead coat dress, a matching hat, suede shoes, and precious jewellery to the event on November 22.

The Queen's Three Plumes Brooch, which has the Prince of Wales feathers insignia, and Princess Diana's diamond and pearl drop earrings were both worn by the monarch.

When Queen Alexandra wed Prince of Wales King Edward VII in 1863, she was presented the diamond, ruby, and emerald brooch.

The sparkler was worn by Diana until her passing in 1997 and by Camilla in the 2000s.

For the State Dinner at Buckingham Palace, Kate donned a Jenny Packham cape-style gown.

She added the Lover's Knot tiara, another one of Diana's favourites, to complete her dream ensemble.