An oil painting depicting Madonna in the nude with her ex-husband Guy Ritchie has failed to meet the reserve price of ВЈ15,000 at auction in Glasgow.

Acclaimed Scottish artist Peter Howson has produced several portraits of the pop icon in a state of undress.

Madonna & Guy was painted in 2005. The couple parted last year.

The portrait, being sold by a private collector, did attract some bids during the sale at McTear's Auctioneers but they did not satisfy the seller.

Brian Clements, director at McTear's Auctioneers, said: "The auction was very successful, however, surprisingly Peter Howson's controversial piece Madonna and Guy did not sell on the day.

"The painting is still for sale and we would be delighted to hear from anyone who is interested in this much talked about piece of Scottish art history."