Free & Cheap

A MAGICAL FLORAL DISPLAY: Rebecca Louise Law has suspended 10,000 irises from the ceiling of this gallery, creating a somewhat magical environment to enjoy. NOW Gallery (Greenwich Peninsula), free, just turn up, until 7 May

SELFIES: Are selfies art now? Saatchi Gallery thinks so — it’s got a whole exhibition dedicated to selfies, from painted self portraits to celebrity snaps. Saatchi Gallery (Chelsea), free, just turn up, until 31 May

THE BEST IN PHOTOGRAPHY: We always look forward to the Deutsche Borse Photography Prize as the benchmark of photography as art. The finalists’ styles change dramatically every year, and this annual exhibition has included many impressive winners in the past. The Photographers’ Gallery, £4 (free before noon), just turn up, until 11 June

RUBENS & REMBRANDT: The two names alone should get art fans excited. The National Gallery has a display of these two Old Masters in (the often hard to find) gallery B. Rembrandt’s self-portraits are brilliant, showing a young artist on the up, and a somewhat morose old man towards the end of his years. Couple these with the bold Biblical scenes of Rubens and you’re onto a winner. National Gallery, free, just turn up, until 16 July