Isabella Blow (born Isabella Delves Broughton; 19 November 1958 – 7 May 2007) was a British magazine editor. She worked for publications such as "Tatler", "Vogue" and "The Sunday Times". She was the muse of hat designer Philip Treacy. She is credited with discovering the models Stella Tennant and Sophie Dahl. She is also known for helping further the career of fashion designer Alexander McQueen.