The crown worn by Victoria during the lavish nuptials is to be sold at auction with a guide price of £25,000 – though experts say a superfan of the singer-turned designer could well pay a good deal more.

The gold and diamond crown tiara made by acclaimed jewellery designer Slim Barrett, is to be sold in the Fine Jewellery sale at Bonhams auction house in London.

The tiara, entitled East of Paris, which Victoria wore throughout the ceremony, is valued at £18,000 – £25,000 and is crafted from 18-carat latticed yellow gold, set with large brilliant-cut diamonds and suspended diamond drops.

The couple were married on July 4 1999 by the Bishop of Cork, Paul Colton, at LuttrellstownCastle, in Ireland and the couple’s four-month old son Brooklyn was the ring bearer.

To complement her crown Victoria wore a £60,000 wedding gown by Vera Wang and sat alongside her husband on matching gold thrones.

The Victoria and AlbertMuseum exhibited the work in 100 Tiaras, Past and Present and it was included in the prestigious Diamond Divas exhibition at The DiamondMuseum in Antwerp.