Miley Cyrus is to become an aunt.

The 'Last Song' actress' older brother Trace Cyrus is reportedly expecting a baby with former 'The Suite Life of Zack and Cody' star Brenda Song, according to E!.

It would be the first child for the 23-year-old beauty and Trace, 22, who are thought to have begun dating in May when they appeared at an event for the first time together.

Trace - who has previously dated Demi Lovato - is best known for his band Metro Station and his clothing line, but has made no hint of expanding his family.

Writing on twitter yesterday (23.08.11), he revealed he had enjoyed dinner round his sister Miley's house and now wanted to thieve her new dog.

He wrote: "I just got home from having a nice dinner at Miley's house. Got to say I want to steal her new dog Floyd. He is so awesome!"

The rocker also revealed he was planning to add a new Tattoo to his already large collection of inkings.

Trace tweeted: "Pretty sure going to see Chris Garcia next month and get both my feet tattooed and a little more done on my back. Very excited for that!"