The "Desperate Housewives" star and Mahoney were married Saturday in San Gabriel, California.
About 200 guests attended the wedding at the Church of Our Savior Episcopal Parish, People magazine reported.
The children of some of Cross' closest friends served as the seven flower girls, the magazine reported.
Cross, 44, and Mahoney, 48, got engaged last August.
Before Cross was cast as Bree Van De Kamp on "Desperate Housewives," she also had roles on "Everwood" and "Melrose Place."