Robert Kirchgassner Musician Trace Cyrus is engaged to actress Brenda Song.The couple began dating in 2010 and are now reportedly expecting a child, which was first reported in August. “I am very excited to say, last week I asked my girlfriend Brenda Song to marry me and she said YES! We are both very excited to be engaged!” Cyrus, whose sister is Miley Cyrus and whose father is Billy Ray Cyrus, announced.”Trace has known Brenda through Miley for years but they were always friends,” a source said.Photos of Song wearing what appeared to be an engagement ring emerged this morning. She is known for her roles on the Disney Channel sitcom The Suite Life of Zack and Cody and the film The Social Network(2010). Cyrus is working on an album with his band Ashland HIGH. He often collaborates with his famous father and sister. A wedding date hasn’t been announced yet.