The ceremony was held at the Newland House Museum in Huntington Beach in front of about 120 guests. Donato wore an Anthropologie wedding dress, People magazine reported.
The couple met while the two were filming the U.S. reality TV series "Big Brother" in 2011.
"Truth be told, I really didn't like him at first," Donato was quoted as saying. "I thought he was a little troublemaker. But we became friends, and although I didn't like him like that, it just grew."
The two fell in love after the finale was taped, Donato said. Briones proposed to Donato at the St. Louis Zoo.