X17online, Gregg DeGuire/PictureGroup
October 05, 2012 06:00 AM

That’s one rockin’ family!

Miley Cyrus , fiancé Liam Hemsworth and brother Trace stepped out to support sister Brandi Cyrus at the Troubadour in West Hollywood on Monday night.

The trio couldn’t be more excited to see Brandi’s band Frank + Derol perform.

“They watched the show from the balcony and cheered the girls on,” a concertgoer tells PEOPLE.

Trace proudly Tweeted, “My sister Brandi killed it at her show tonight! So proud of her for going on this tour! 1st show was sold out! Good sign!”

Miley also showed her support for her sister on Twitter, sharing a photo of the venue’s marquee with followers.

– Marisa Laudadio

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