‘A pool in the basement is a clear marker of wealth’: how the super-rich are digging down

In London’s richest boroughs vast subterranean enclaves are being carved out over several floors to house cars, wine, saunas and private nightclubs. How did underground living – once associated with poverty and disease – become an investment scheme for the uber-wealthy?

‘Vogue was my escape hatch!’ André Leon Talley on Warhol, Wintour and weight interventions

After a poor childhood, he became editor-at-large at US Vogue. He talks about racism in fashion, why he stopped reading British Vogue, his new documentary – and dressing Melania Trump

Loulou de la Falaise: Yves Saint Laurent’s reluctant muse

For 30 years, she helped Saint Laurent see things through rose-coloured glasses. A new book reveals why the troubled designer was drawn to his right-hand woman’s more-is-more style

Lifting the veil: who will design Meghan Markle’s wedding dress?

With less than a month to go until the royal wedding, speculation is mounting, with Stella McCartney, Erdem and Christopher Bailey among the runners and riders

Dream ticket: how sleep became a billion-dollar business

Tiredness is the new norm – no wonder companies are selling sleep aids from spooning robots to cuddle blankets. How did a restful night become a luxury item?