Ellen DeGeneres and Portia de Rossi are among the 15 couples on Forbes' annual World's Most Powerful Couples list.

The list, which is topped by President Barack Obama and Michelle Obama, ranks the couple at number six, after Hollywood couple Brad Pitt and Angela Jolie and before Yahoo! CEO Marissa Mayer and Zachary Bogue.

Forbes ranks DeGeneres at 51 on its World's Most Powerful Women list.

According to the magazine, the 55-year-old comedian and host of The Ellen DeGeneres Show is worth an estimated $53 million.

DeGeneres and de Rossi married in California in 2008, one of the many high-profile weddings which took place in the state that summer before voters approved Proposition 8, which overturned a California Supreme Court decision legalizing such unions.

On Sunday, Netflix released the fourth season of Arrested Development, which originally aired on Fox. De Rossi, 40, reprises the role of Lindsay Funke in the sitcom.

Speaking to Los Angeles Confidential, de Rossi said that marrying DeGeneres changed their relationship.

We were together for four solid years before we got married, but the minute we said 'I do,' the minute we stood up in front of our parents and our friends and committed to each other, our relationship changed,” she said. “I don't think people understand how important that little ceremony is and what it actually does to people. To my mother, instead of thinking of our relationship as a little bit less than my brother and his wife's relationship in some way, it made them instantly equal in her mind, and Ellen became her daughter rather than someone that I was with or dating. It just made it more like family, and our commitment to each other just strengthened instantly.”