‘Ageism is so last century’: Harvey Nichols uses 100-year-old model

Department store marks Vogue centenary by running ad that ‘proves the older generation can be fearlessly stylish too’

£1.5m Battersea power station apartments held back from market

Downturn at top end prompts developers to withhold from sale 150 flats designed by Frank Gehry and Norman Foster

Sir Elton John and JK Rowling listed as most charitable UK celebrities

Singer donated £26.8m and author gave £10.3m in 2015, though Sainsbury family top list of wealthy givers with £220m

A brush with Picasso: rare portraits to be displayed in London

National Portrait Gallery exhibition will feature more than 75 portraits, some of which have never been seen in the UK

London set for more than 35,000 new luxury homes in next decade

Developers have projects in the pipeline totalling 40m square feet and worth £77bn at 196 sites across the capital

Open all hours: Art Night to give Londoners their own nuit blanche

Inspired by the popular Paris events, audiences will be able to explore art in venues from tube stations to luxury flats for one entire night this summer