Fashion’s best documentaries – plus a chance to see Dior & I

From creative clashes to the crude sign in Chanel HQ’s men’s toilets, these documentaries reveal the truth behind the glamour of fashion

Hello, Kitty: Japan’s obsession with cats hits New York

Centuries before Maru the YouTube star, cats were revered in Japan – despite the fact they are not native to the country. That love endures, as a new show reveals

Van Gogh’s fading Sunflowers… and other tales of decaying art

Supposed damage to Van Gogh’s paintings is minimal, but other masterpieces by Leonardo and Duchamp et al are showing the ravages of time

Raf Simons takes Dior’s nature theme up a notch with ‘something more liberated’

Autumn/winter 2015 ready to wear collection makes reference to heritage but patent boots, seen in couture show, add a sassy edge

Inside the surreal world of Guy Bourdin

Curator Alistair O’Neill and Guardian fashion editor Jess Cartner-Morley discussed the life and work of Guy Bourdin at a Guardian membership event at Somerset House this week. Here’s a cheat sheet

The 10 best art patrons

As a new show at the National Gallery explores the influence of Paul Durand-Ruel, the dealer who ‘made’ the impressionists, Rachel Cooke highlights other great patrons and collectors