Magnolia flowers, pearls and a pastel palette: there were plenty of nods to Karl Lagerfeld's artistic leadership at Chanel at the Costume Institute's annual gala in New York. Yet as a new exhibition of his celebrated designs opens inside the Met, we find out why this homage has stirred up controversy. We also take a look at the line-up of this year's Cannes Film Festival jury, as director Ruben Östlund leads a gender-balanced band of artists from all over the world. Elsewhere, our reporters in Abidjan give us the inside track on "FEMUA", Africa’s biggest urban music festival. Plus we check out a new exhibition celebrating photographer Elliott Erwitt's talent for capturing the humour in everyday life.