The actress, who tied the knot with the talk show host, 52, on Aug. 17, 2008, has asked the court to legally change her name to Portia Lee James DeGeneres, according to a petition filed Friday in L.A. County Superior Court.
As for the reason, the papers, which were initially signed by Rossi, 37, in March, say, "Petitioner is taking the last name of her spouse."
But de Rossi isn't a DeGeneres just yet. The name change won't be official until a hearing, scheduled for Sept. 23, takes place.
A rep for the talk show host had no comment.
TMZ.com was first to report on the filing.