Nelly Furtado has taken a secret trip down the aisle.

The singer, who is engaged to Cuban sound engineer Demacio Castellon was spotted sporting a gold wedding band next to her diamond engagement ring at Miami's Y100 Jingle Ball on Saturday.

"Nelly was partying backstage with Natasha Bedingfield and Timbaland" claims a witness "She was so happy and there was no missing the gold band on her finger.

"Natasha took her hand and looked at it and then hugged her and whispered something in her ear. It looked like she was congratulating her."

The 29-year-old performed at the festive event held at BankAtlantic Center to a packed house.

The singer met Demo when he worked on her hit album 'Loose' in 2006.