Ne-Yo married his pregnant fiancee Crystal Renay this weekend in front of about 150 guests at the Terranea Resort in Palos Verdes, Calif.

The singer's publicist confirmed to Us Weekly the sunset ceremony took place Saturday.

"They stood under a big wooden altar that was draped with white curtains and flowers," an onlooker told the magazine.

"At the end of the ceremony, Ne-Yo and Crystal held hands and raised their arms into the air as all the guests screamed and cheered. They looked so happy and in love."

Ne-Yo has two children with his ex-fiancee, Monyetta Shaw: daughter Madilyn Grace, 5, and son Mason Evan Smith, 4.