Erin O’Connor was born on February 9, 1978 in Brownhills in the Metropolitan Borough of Walsall, England. Her mother worked at a nursery school and her father was a welder. She took her studies from Brownhills Community School. She wants to be a school teacher in her childhood but in 1995, she went on a school trip to Birmingham Clothes Show and then she was spotted by model 1 scout. In 1996, she was appeared in print, which were shot by Juergen Teller and published in I-D magazine.
O’Connor has been associated with some of the luxury labels Chanel, Versace, Givenchy, Dolce & Gabbana, Gucci, Armani, and Jean-Paul Gaultier. Many fashion photographers announced her one of the best models of the world. She has worked with many leading fashion photographers including Patrick Demarchelier, Steven Meisel, Steven Klein, Nick Knight, Mario Testino, David Sims, and Jonathan de Villiers, and featured in magazines including Vogue, W, ELLE, Nova, Harper’s Bazaar, Harpers & Queen, i-D, and Visionaire.