[London, June 17. Image via Getty]

LONDON, ENGLAND - JUNE 17: A schoolgirl poses with works by Barbara Hepworth and husband Ben Nicholson at Sotheby's auction house on June 17, 2009 in London, England. The stone piece in the foreground is entitled 'Three Standing Forms' and is ranked among the most important works by Hepworth ever to appear at auction. It is estimated to sell between GBP700,000 - GBP1 million when it goes on sale today, 18, June. The painting entitled 'Abstract Composition' at rear will also be auctioned. (Photo by Dan Kitwood/Getty Images)