Magazine and Reach PLC magazines. Alexi Rosenfeld/Getty Images; Tim Graham Photo Library via Getty Images Princess Diana's iconic black sheep sweater is breaking records. On Thursday, the garment ...

The frilly collars! The oversized sweatshirts and leggings! But perhaps my favourite piece of all is that iconic black-sheep jumper by Warm & Wonderful that she wore, aged 19, to the polo in 1981.