A surrealist painting from the 1940s by Frida Kahlo has sold for $54.7m (£41.8m) - shattering the auction record for an artwork by a female artist. The painting went for more than 1,000 times its original auction price in 1980, after a tense bidding battle between two collectors, according to the Sotheby's auction house.

A 1940 self-portrait by Mexican artist Frida Kahlo has sold for $54.7m (£41.8m) in New York, making it the most valuable work by a female artist ever auctioned.