Trace Cyrus & Brenda Song expecting their 1st child

Miley Cyrus' (23) brother, rocker Trace Cyrus (22), and his girlfriend, Brenda Song (23) of Disney Channel and The Social Network fame, are expecting their first child.

The news has come as a bit of a surprise to the young couple. "It was not expected," a source tells Us Magazine. "They were both startled to find out she's pregnant....They are figuring out how to handle it."

Miley's going to be an aunt?! Billy Ray's going to be a grandpa!

Love...

xo Haley-O

Photo of Trace Cyrus: Fame Pictures