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Miley Cyrus

Former "Hannah Montana" star Miley Cyrus has a love-hate relationship with Twitter. She famously stopped using it in October 2009, saying she was tired of telling everyone what she was doing and wanted to be more caught-up in the moment, but then started tweeting up a storm again last April. On February 13, the 19-year-old even debuted a new haircut -- a more mature, shorter bob -- on Twitter with a pic and the question, "You likey?" Well, do you? (2/16/2012)

Stars Sport New Looks in 2012

Miley Cyrus, Rihanna, Ben Affleck, and others change up their hairstyles.