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Hair today, gone tomorrow.

The only thing Rihanna seems to like more than shedding clothes is changing her 'do, and she stepped out this week with yet another new spin to her mane, this time showing off a half-shaved, half-extension style.

It's certainly a look.

Read what Rihanna had to say about her controversial reunion with Chris Brown

And, as it happens, it's the third all-new look Ri-Ri has shown off in the last few weeks alone.

Earlier last month, the Chris Brownsecond-chancer showed off long, extension-abetted locks while she was making the Hollywood clubbing rounds. And just this week, she took to Twitter to show off a return to her signature close-cropped pixie 'do in a series of sneak-peek "top secret" campaign photos.

So tell us, which Rihanna look do you like best?

Check out the sexiest of Rihanna's sexy twitpics