Although I dislike the term "supermodel," it might actually apply very appropriately to Marie Helvin.
That should be obvious. :-D
Marie Helvin was a top model in the 1970s, appearing on the cover of the British edition of Vogue numerous times and working together on photographic projects with her then-husband, British photographer David Bailey (he was married to Catherine Deneuve in the late sixties, for those keeping track).
Though an American by upbringing - she was born in Tokyo to an American serviceman and a Japanese translator and raised in Hawaii - Marie Helvin made a name for herself in London. She married Bailey in 1975 after having done a session with him; the marriage lasted a decade.
After leaving mainstream modeling, Marie Helvin remained in the U.K. She became a Jill of all trades, and she mastered just about all of them. She became a broadcaster, covering books, travel, and other subjects, and she also produced a health and fitness video and launched a line of bodywear and swimwear. She's become something of a fashion institution in the United Kingdom, and she appeared on the cover of the British edition of Vogue as recently as 2007. She was 55 at the time.