The Julien’s auction will include some of the princess’s most famous cocktail and evening dresses, suits, shoes, hats, and accessories. Among the highlights is a Murray Arbeid midnight blue ...

The two gowns were a collaboration between Gucci and a porcupine quillwork artist. Both are now on display at the Smithsonian's National Museum of the American Indian ...

The Grammy-nominated star wowed in a midnight blue Roberto Cavalli two-piece set and $3 million worth of Lorraine Schwartz jewels Tracey Harrington McCoy is a celebrity news writer at PEOPLE Digital.