As Voguepida (yes, really) puts it, Diana had a gift for coining phrases, which would later show up in her work as editor of Vogue. She was born in Paris in 1903, and moved to America, due to the outbreak of World War One. She was sent to dancing schools, and was first featured in Vogue in January 1922.
Aged 21, she married Thomas Veerland, on the first march 1924. After they moved to New York, to raise their two sons, until 1929.
In 1936, age 33, she began her publishing career, as a Columnist for Harpers Bazar. She resigned in 1962, and was a style advisor to Jackie Kennedy (coincidentally, she became a fashion editor for Harpers).
Joining Vogue from 1962, she was editor from 1963-71. The main reason she is thought to have joint Vogue, is because she was passed over for promotion, in 1957, at Harpers Bazar.
So from Paris, she came to the US knowing no English. And later became Editor in Chief of US Vogue. The Anna Wintour of her time. A columnist, making outrageous statements, who earnt very little, according to the internet.
The similarities between her and Helen Gurley Brown are so clear- both capable of revamping magazines, and they both came from a poor background. What better way, when your paents say your ugly, to come out on top?