LOS ANGELES (UPI) -- Television personality Ellen DeGeneres reportedly is planning to marry her longtime girlfriend, actress Portia de Rossi, this weekend in California.

Usmagazine.com said it has learned exclusively that the celebrity couple, who have been together since 2004, will exchange vows at a small, intimate ceremony in front of a few close friends and family members.

DeGeneres announced the engagement at a taping of her "Ellen DeGeneres Show" in May, shortly after the California Supreme Court ruled that same-sex couples have the right to marry.

"It's something that we've wanted to do and we want it to be legal and we are very, very excited," DeGeneres said at the time.

De Rossi is best known for her work on the TV shows "Ally McBeal," "Arrested Development" and "Nip/Tuck."