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 woman who bought a Banksy painting for more than ... Moments after the framed Girl With Balloon was sold by Sotheby's in London, the canvas shredded itself. Pest Control, a firm acting on ...