| The collection continues on the fourth floor with Pop Art (room 3). Easily recognizable is Andy Warhol's piece Ten Lizes (1963), in which the actress Elizabeth Taylor sports a Mona Lisa-like smile. In room 4 Yves Klein prefigures performance art with his Grande anthropophagie bleue; Hommage a Tennessee Williams (1960), one in a series of "body prints" in which the artist turned female models into human paintbrushes, covering them in paint to create his artworks. Most of the prints are executed in International Klein Blue, a beautiful deep and luminous blue which the artist patented himself. Displays of more recent works are subject to change, but established artists you're likely to come across include Claes Oldenburg, Christian Boltanski and Daniel Buren. Christian Boltanski is known for his large mise-en-scène installations, often containing veiled allusions to the Holocaust. His Réserve (1990–99), currently on display, is a room hung with lots of musty-smelling secondhand clothes; the effect is oddly oppressive, the absence of the original wearers suggesting death and anonymity. Daniel Buren's works are easy to spot: they all bear his trademark stripes, exactly 8.7cm in width. He caused a furore in 1986 with his installation of black-and-white, vertically striped columns in the courtyard of the Palais Royal, and his work was widely criticized and vilified by the press. Now, however, in his sixties, the one-time enfant terrible of the art world has become one of France's most respected living artists – a status confirmed by a one-man show at the Pompidou Centre in 2002. Up-and-coming names you might come across are Pierre Huyghe, who uses video to explore the relationships between reality and fiction, history and memory, often taking film clips as his source material; and Annette Messager, whose large-scale installations use everyday objects to create unsettling works, often challenging perceptions of women.
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