David Bowie’s wife Iman has spoken publicly about her late husband’s death for the first time, saying it had been a “tough year, but I’m holding up”.

Speaking at Tom Ford’s show at New York Fashion Week, the model said she was wearing a necklace with the name “David” in memory of the singer.

“I’m wearing this until my death,” she said, holding the gold necklace.

She said it had been made by fashion designer Hedi Slimane.