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$90 million was the record-breaking price paid for David Hockney's "Portrait of an Artist (Pool with Two Figures)" in 2018. This sale made the painting the most expensive artwork by a living artist ever sold at auction. The vibrant and iconic work depicts a man standing by a swimming pool, with another figure submerged underwater. Hockney's masterful use of color and perspective captures the essence of the California poolside lifestyle.