By laying bare the relationship between commerce and art, Warhol nullified the idea of being a sell out.

The Case for Andy Warhol

Andy Warhol, Marilyn Diptych, 1962, acrylic on canvas, 2054 x 1448 mm (Tate) © The Andy Warhol Foundation for the Visual Arts, Inc. 2015
Warhol used a quasi-mechanical process of silkscreen to reproduce Marilyn Monroe’s familiar face again and again.

Andy Warhol, Marilyn Diptych