A dress worn by Princess Diana, designed by Catherine Walker. Photo: Getty

Four dresses designed for and worn by the late Princess Diana are to go under the hammer in Beverly Hills.

Three of the gowns were made by British dressmaker Catherine Walker, Diana’s favourite designer and close personal friend, and are expected to fetch between $US60,000 ($A64,917) and $US80,000 ($A86,556) each.

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The first is an off-the-shoulder petal pink gown embellished with bands of simulated pearls, faceted glass and beadwork.

Also on offer is a strapless ivory silk crepe dress and a chartreuse silk georgette gown worn by Diana in 1993.

The fourth, an evening gown created for Diana by Zandra Rhodes, is estimated to sell for $80,000 to $100,000.

The dresses, along with other Diana-related items, will go under the hammer at Julien’s Auctions in Beverly Hills on December 5-6.