In the fall of 2005, a series that Rubenstein conceived titled "Miss Seventeen", debuted on MTV. The series featured seventeen girls competing for the honor of being Miss Seventeen – an award that included a college scholarship, an internship at "Seventeen", and a cover and spread for the publication. Rubenstein was the creator and an executive producer on the series. She appeared in several episodes of the reality show series "America's Next Top Model". On 7 November 2006, she announced that she would be leaving "Seventeen" to launch her own teen-centered web business, write a book, and start a consulting firm specializing in the youth market. Her replacement was Ann Shoket. In December 2006, Rubenstein started Big Momma Productions, Inc.  Rubenstein lives in Manhattan with her husband, Ari Rubenstein. He is the founder and managing partner of Global Trading Systems LLC, a stock, commodity and foreign currency trading company. On 15 August 2008, Rubenstein gave birth to a daughter. She later gave birth to twins.