Taylor Swift hung out with her brother at the CMTs! Aw!

Taylor Swift clearly had a BALL at last night's 2013 CMT Music Awards, but we can't help but notice that girlfriend assumed several different personas while doing so! First, she was all "hair messed up, red dress-wearing rocker chick" during her "Red" performance, then she got all "dance like nobody's watching" while sitting in the audience, she WERQUED her usual "HOLY EFF" surprised face, and finally, she got all "sentimental sister" while proudly sitting next to her younger brother, Austin, who served as her date for the evening!

Watch Taylor Swift's "Red" performance at the 2013 CMT Music Awards after the jump!

Before we go any further, let's just call out the fact that Taylor and her brother have the VERY same mouth and chin situation happening, and it's pretty adorable. Second, we kind of love seeing Taylor sitting next to a family member and not a moderately controversial dude! And don't get us wrong -- it's not like Tay couldn't run into John Mayer or Harry Styles at any second (it's all about social circles, isn't it??), but this time if she does, she's got Austin by her side to man up and protect her! And yeah, dude's got muscles. We can see biceps through that suit, honey.

+ Watch Taylor Swift's "Red" performance at the 2013 CMT Music Awards.

Check out more 2013 CMT Music Awards coverage, including live performances, up-to-the-minute news, viral videos, red carpet photos, and more.

Photo credit: Getty Images