Waldemar Januszczak gets a sneak preview of the pop star’s art collection before it goes under the hammer

The RA’s definition-busting show throws all preconceptions out of the window — and you’ll find at least as many naked men as women

The Amercian artist is asking awkward questions about our gallery funding. It’s time we joined her

One of many women overlooked in the surrealist movement, Tanning is now feted with a Tate show of her own

For all its charm, the V&A’s Christian Dior exhibition shows clearly that the brand couldn’t measure up to its founder’s work

A surprising show at the Hayward reveals the great photographer’s gentler side

Childless, sleepless and now motherless: the artist gives voice to her pain in an explosive show. It’s a game-changer

Koons at the Ashmolean: like Popeye giving the Reith Lectures

The Royal Academy has put Bill Viola’s videos next to Michelangelo’s drawings: who wins?

Too many marks, too many colours, too little sense of direction: our critic is underwhelmed by the artist’s clunky, repetitive works