Seems getting naked is the new getting dressed in Hollywood these days.
You can hardly move for stars stripping down, at one with the world in their birthday suits.
But who's the latest recruit in the celeb bare-all brigade?
It's the not-so-shy Alicia Silverstone.
Has the blonde-haired beauty had it with clothes? Or is she a newly reformed nudist perhaps?
Well, actually it's neither of the above.
Lisha has proved she's not so clueless when it comes to the more serious issues in life.
This little naked stunt is all part of the ad campaign she's signed up to in support of the animal rights group Peta (People for the Ethical Treatment of Animals).
And she's not the only celeb who's passionate about Peta.
In fact, the organisation boasts an impressive hall of famous faces who've given their backing to the cause.
And a fair handful of these have felt strongly enough to get their kit off in a move to raise the campaign's profile.
Click on our gallery of Peta celebrity activists to see more...
Anything for a good cause, eh?
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