Miley Cyrus' friends think that she has taken her strict diet and exercise regime too far. The 19-year-old has lost a lot of weight in the past few months.
Cyrus has been hitting the gym hard, sometimes attending two pilates classes a day. She's only been eating a measly 1,000 calories a day.
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"Miley was getting really frustrated with the lack of film roles. So she's on a serious mission to shape up, so she can boost her career," said a source.u00a0