It has since been nicknamed the 'Princess Diana Sweatshirt' and is sold on sites ... a white shirt by Anine Bing tucked into La Ligne mom jeans, reflecting Diana's iconic off-duty style.

One of Diana's most iconic contributions to style is her sweatshirt and bike short combo ... Diana's formula for casual dressing included jeans and boots, a blazer and a baseball hat.

The Duchess of Sussex, who attended Northwestern University, also shared a glimpse of one of her children as they helped her water the garden Meghan Markle/Instagram; Brendan Beirne/Shutterstock ...

Princess Diana, meanwhile, was photographed pairing the college sweatshirt with some cycling shorts and trainers while out and about in London. According to Royal British Fashion, the late royal ...

The sweatshirt isn’t just a nod to her alma mater, but also to her late mother-in-law, Princess Diana, who famously stepped out in a Northwestern crewneck after visiting the university in 1996.

Meghan Markle re-created her late mother-in-law Princess Diana’s famous Northwestern sweatshirt look. On March 9, the Duchess ...

Meghan Markle re-created her late mother-in-law Princess Diana’s iconic Northwestern sweatshirt look. On Sunday, the Duchess of Sussex took to her Instagram Stories to share videos from her time ...

Princess Diana. Now she has been at it again, posting a clip on Instagram of herself parading in the garden of her California home in a purple Northwestern sweatshirt just like one Di regularly ...

Back in 1996, Princess Diana had toured the Chicago area, visiting the Northwestern campus and even securing a university sweatshirt as a souvenir. She was later seen back in London en route to ...

pairing blazers with baseball hats and jeans with Western-style boots. One of her most famous outfits, which paired bike shorts with a sweatshirt, even inspired the term Princess Diana weather, ...