The avid Instagram user and art world oracle forecasts the fortunes of the art world's favourite app

The astronomical increase in the value of works by the Canadian artist, who died by suicide last year, is driven by morose opportunism

Don't be shy, be bold–and don't take in too many fluids

In her lifetime, the art collector’s personal reputation was shredded, but, as Lisa Vreeland’s film shows, her influence on the art world was astonishing

Kenny Schachter on the auctions in New York