This Princess Diana coat created by hers and Catherine's favourite designer just sold for thousands of pounds

The Duchess of Cambridge may never have had the chance to meet her mother-in-law, Princess Diana, but she's certainly taken inspiration from her fashion choices over the years.

And now, a coat the late Princess wore, from one of their joint favourite designers, has sold at auction for tens of thousands of pounds.

Three of Diana's daywear outfits were auctioned off at Kerry Taylor Auctions in London this week, and altogether fetched an incredible £260,000.

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Each of the outfits were worn back in the 1980s, during various royal engagements. And one, an orangey peach polka dot coat, designed by Catherine Walker, sold for an impressive £93,000.

Diana wore the coat dress when the President of Turkey came to visit the UK, so it's a much-photographed outfit of hers.

And it's no surprise that it's proven popular, as her daughter-in-law, the Duchess of Cambridge, now regularly favours Catherine Walker designs herself, for similarly prestigious occasions.

In fact, Catherine work a monochrome Catherine Walker coat dress for the recent Order of the Garter ceremony, attended by the King and Queen of Spain.

The designer has become one of her go-tos for royal events, almost as much as Alexander McQueen, the fashion house that designed her 2011 wedding dress.

The other two outfits sold at the recent auction were a simple white and blue striped dress made by Princess Diana's wedding dress designer, David Emanuel, and his wife Elizabeth, and a vibrant red Jasper Conran suit, which she wore to open a new cruise liner back in 1984.

The dress sold for a huge £120,000, while the latter outfit sold for a very respectable £62,500.

Kerry Taylor of Kerry Taylor Auctions, told the Daily Mail that they were astonished by the prices Diana's outfits fetched on the day.

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She said, "Diana's day wear is much rarer than her evening wear which she auctioned a huge tranche off in the late 1990s. Day wear dresses she wore for more formal functions she either gave to friends or charity shops, so they have mostly disappeared.

"These were very well documented outfits and one of a kind as they were made specifically for her. We were astonished by some of the prices achieved in the auction and are very pleased, as are the vendors."