Ellen & Portia are getting hitched!

After Califoria's Supreme Court struck down the ban on gay marriage, Ellen DeGeneres announced to her live studio audience that she and long-time girlfriend Portia De Rossi are getting hitched.

"I'm very excited," she told the crowd, who gave her a standing ovation.

The two have been dating since December 2004 and DeGeneres, 50, said the key to her relationship with her 35-year-old girlfriend is their ability to learn from each other.

"She's taught me lessons about myself, and I feel like I've taught her," the host of the Ellen DeGeneres Show said. "We've both changed and grown, and we just feel like, 'Oh, okay, this is completion.'"

Ellen also spoke to the The Advocate about her decision to wed.

"I'm thrilled that the California Supreme Court overturned the ban on gay marriage," she told the magazine. "I can't wait to get married. We all deserve the same rights, and I believe that someday... not allowing gays to marry will seem as absurd as not allowing women to vote."

The episode will air today, a day after DeGeneres made her announcement.