L'Amour Fou, a documentary which premiered stateside at the Tribeca Film Festival last month, follows the love between Yves Saint Laurent and Pierre Bergé by chronicling the development of their legendary art collection, recently auctioned by Christie's for $480,000,000.

L'Amour Fou trailer

Read an interview with the film's director, Pierre Thoretton — and watch a long-lost video by photographer Jeanloup Sieff wherein Yves answers the Proust questionnaire — at The Moment.