Catherine Walker

The biggest auction of Diana memorabilia since the late British princess sold dozens of outfits months before her death gets underway in California this week, featuring a midnight blue tulle dress and a flamenco-style lace-up number.

Nearly 50 pieces, including gowns, shoes, handbags and hats, will go under the hammer in Beverly Hills.

A rare portrait of Diana, Princess of Wales, will be on public display for the first time after it was recently sold at auction.