Fancy sitting in Pippa’s saddle?

The signed £2,500 custom-made Dassi Aero 6.2 road bike, which the Duchess of Cambridge’s sister rode to raise money for the British Heart Foundation, is up for sale on the charity’s eBay site.

Miss Middleton, who is an ambassador for the BHF, has raised £20,000 in donations after taking part in the 3,000-mile relay, called Race Across America.

Bids on the bike auction so far stand at £2,510.

Miss Middleton said: “The challenge of riding across the Rockies, coping with the heat of the Arizona desert and climbing more than 170,000 vertical feet in the six days was incredibly tough, but every inch of the 3,000-mile race was worth it, to help the BHF fight heart disease.”

Half of the funds raised from the auction will be donated to the Michael Matthews Foundation that helps to provide education to children all over the world, which is another good cause that is supported by Miss Middleton.

The online auction is running until a 9am deadline on Wednesday next week at www.bhf.org.uk/ebay.