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Portia de Rossi is about to be Portia DeGeneres.

De Rossi, 37, filed a petition at L.A. Superior Court on Friday to change her last name to match her wife of two years, reports.

"Petitioner is taking the last name of her spouse," says the official document.

The two said "I Do" in front of just 30 guests at their Beverly Hills estate on Aug. 16, 2008. Both wore Zac Posen (de Rossi opted for a princess gown, De Generes, 52, wore an all-white suit) and exchanged rings designed by Neil Lane.

PHOTOS: Stars' engagement rings!

They began dating in December 2004.