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Miley Cyrus attended the 24th Annual KROQ Almost Acoustic Christmas concert in Los Angeles on Saturday, and the 21-year-old starlet debuted her newest hairstyle -- a blonde bob with bangs!

We're PRETTY sure this is a wig, but either way, it's fun to see the "Wrecking Ball" singer switching up her look! Miley tweeted the pic above and wrote, "@CageTheElephant f*cking killllllllled it last night #KROQXMAS," and she also posed for a photo with the band Grouplove. She didn't perform at the show, but maybe she will sometime in the future? After all, if she gets more into rock 'n roll, you never know! She's certainly got the voice for it...