@demilovato / Instagram 1 / 20
@demilovato / Instagram 1 / 20

Demi Lovato changed up her look yet again on Friday, debuting her new bob haircut on Twitter in several shots.

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"Just went shorter!!!! only the best from @RiawnaCapri at @NineZeroOne," the "Heart Attack" singer, 21, tweeted along with a smiling snap of her new 'do.

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The Disney Channel alum kept the bright purple tips on her hair and the shaved side she debuted in March. Lovato added thick layers to her naturally brunette locks, which now reach just above her shoulder.&

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The vocalist ended her Neon Lights Tour in May, but hasn't stopped performing. In June she sang her song "Really Don't Care" during L.A. Pride's Parade, and later that month hit the stage at NYC's Annual Pride Dance on the Pier.

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