Miley Cyrus & sister Noah do karaoke

LOS ANGELES, CA - MARCH 25: Noah Cyrus (L) and actress/singer Miley Cyrus arrive at the premiere of Touchstone Picture's 'The Last Song' held at ArcLight Hollywood on March 25, 2010 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

Miley Cyrus and her little sister Noah have been doing karaoke over the holidays.

18-year-old Miley and her 10-year-old Noah sang a duet of Miley’s hit track Can’t Be Tamed.

“Miley and noah are currently singing “can’t be tamed” on noah’s new karaoke machine,” big sister Brandi tweeted. “It’s pretty hilarious.”

“my Mom is videoing … maybe if you’re lucky i’ll snag it and upload.” she added.

A source told People that Miley’s dad Billy Ray spent some quality time with his family over Christmas at his 500-acre farm outside of Nashville.