Twitpic.com, Bryan Bedder/Getty Images

'Sometimes in life, you need a change,' Cassie Tweets of her half-shaved head. "Something deeper than what you thought you were capable of ... Something that displays the 'I don't give a f---' attitude that was always present, but never showcased ... & something that will shock your mother, but make her call you a ROCK STAR."

Is this simply a PR stunt for her new single? Britney-inspired mania? Or a fashion-forward songstress expressing herself with a new look? I guess we'll just have to wait and see...