Tamara de Lempicka’s first major U.S. survey invokes her as a trailblazing techno-feminist who borrowed freely from art history. But it also buries her erratic second act.

A print of Banksy's famous Girl with Balloon artwork has been auctioned off for more than £80,000. The original proof print of the iconic mural, first created in London in 2002, sold for twice its ...