Ellen DeGeneres and Portia de Rossi Marry

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Ellen DeGeneres and Portia de Rossi tied the knot on Saturday in the biggest celebrity union since California legalized same-sex marriage.

DeGeneres, 50, and de Rossi, 35, wed Saturday night in an intimate ceremony at their Beverly Hills home, People and Us Magazine reported.

Both brides wore couture by designer Zac Posen. De Rossi wore a backless, light pink dress with a floor-length, tutu-like ball skirt and her hair in a loose updo. DeGeneres wore an all-white ensemble that included pants, button-up shirt and vest.

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After the California Supreme Court's ruling in May, the talk-show host announced that she and de Rossi would wed after four years together.

The ceremony was attended by 19 guests, including DeGeneres' mom Betty and de Rossi's mother Margaret Rogers, who flew in from Australia for the occasion, People.com reported Saturday night.

DeGeneres said after winning her fourth consecutive Daytime Emmy for talk show host in June that a date had not been set, and that she would show "a tiny bit" of the nuptials on her show.

The Associated Press contributed to this report.