BrendaSongTraceCyrus.jpgCongratulations, Aunt Miley!

Brenda Song is reportedly expecting her first child with boyfriend Trace Cyrus, 22, according to Celebuzz.

The Social Network star, 23, is said to be about eight weeks along.

Brenda has been quietly dating Miley Cyrus' big brother, best known for his days in the band Metro Station, for over a year. They made their first public appearance together at a Nylon magazine party in May 2010.

Brenda's publicist has not responded to our requests for a comment.