Atoosa Rubenstein (born Atoosa Behnegar, Tehran, Iran in 1972), is an American journalist, editor-in-chief of the Hearst Corporation magazine Seventeen and earlier founding editor of its CosmoGIRL!.
Her father, Mansoor Behnegar, was a colonel in the Iranian air force. When she was three, her family moved to the United States. First living in Queens, New York City, they later relocated to the small town of Malverne, Long Island.
As an undergraduate student at Barnard College, Rubenstein worked her first internship as a public relations intern at Lang Communications, the company that ownes Sassy magazine. Though she loved the industry she was involving herself in, she was forced to work side jobs at Carvel and retail stores to pay her bills. Later on, Rubenstein dropped out of her sorority and took on night classes to take part in her 2nd internship which brought her to the editorial department of American Health magazine. Later, in 1993 she took on the position of fashion assistant at Cosmopolitan magazine and five years later became the senior fashion editor. This led to Cathleen Black, the president of Hearst Magazine, coming to Rubenstein in 1998 and asking her to come up with a concept for a new magazine. Forty-eight hours later Rubenstein preseneted the idea of CosmoGirl Magazine! and was offered the position of editor on the spot. This made her not only hugely sucessful but also the youngest editor in Hearst Magazine's 100 years of history. Rubenstein went on to make CosmoGirl wildly popular with a circulation of 1.25 million readers. Later, in MAY of 2005, Hearst Magazine bought the popular Seventeen magazine and gave Rubenstein the position of editor-in-chief. She has hopes to "clean up" the magazine and bring it back to what it was like when it first came out 30 years ago. Rubenstein currently lives in Northwest, East Hampton with her husband of 7 years, Ari Rubenstein.