Actress Cynthia Nixon and Christine Marinoni married Sunday in New York.

“On May 27, 2012, Cynthia Nixon and her girlfriend, Christine Marinoni, were legally married in the state of New York,” a representative for Nixon told PEOPLE in a statement. “Nixon wore a custom dress by Carolina Herrera.”

No other details were given, but in January it was reported that New Hampshire Bishop Gene Robinson would officiate over the wedding. Robinson faced controversy nearly a decade ago when he became the first openly gay bishop in the Episcopal Church.

Nixon, 46, who is best known for playing feisty lawyer Miranda Hobbes on the HBO series Sex and the City, and education activist Marinoni, 45, got engaged during a rally calling for passage of a gay marriage law in New York three years ago. They have been together since 2004.

Prior to dating Marinoni, Nixon was involved in a 15-year relationship with Danny Mozes, with whom she shares custody of two children.

The women are also raising Max Ellington Nixon-Marinoni, to whom Marinoni gave birth in February 2011.

(Related: Cynthia Nixon, Christine Marinoni & baby Max in People.)