Minogue lingerie sells at auction

A lingerie set once worn by Kylie Minogue has fetched STG5000 ($A7850) at an auction in London.

The red silk La Perla intimates had been expected to go under the hammer for as much as STG4000, but bidding quickly sailed past that figure at the Christie's sale.

Minogue wore the ensemble during a photoshoot for the 2012 Study Vox Foundation charity calendar.

The red bustier with lace trim and red silk and tulle body, accompanied by a signed copy of the Kylie 2012 Official Calendar, was bought by an unnamed fan.

'Thx (thanks) to the mystery buyer!!! WOW! So thrilled and for a great cause,' Minogue tweeted on Tuesday.