Billy Ray Cyrus jokes about Miley's baby rumour

Country singer Billy Ray Cyrus has laughed off the buzzing rumours suggesting that his daughter Miley Cyrus is pregnant.

Miley, 22, was said to be expecting a baby with her boyfriend Patrick Schwarzenegger, reported Ace Showbiz.

"I'm going to be a grandfather. Call me Papaw!" Bill first tweeted.

He followed it up with a fake sonogram her daughter posted earlier this week to mockingly reveal that she was pregnant with a pizza baby. "Yep ... Papaw Cyrus," he said.

Miley and Patrick, 21, were first romantically linked in 2011 while she was on a break with Liam Hemsworth. Miley and Patrick later reconnected after she split from her then-fiance for good and they have been going out ever since.