'90s Babe Alicia Silverstone Goes Naked For PETA

She thinks people who wear fur are clueless.

Alicia Silverstone, star of Aerosmith videos and the teen classic Clueless, is so staunchly against wearing fur, she'd rather wear nothing at all.

That's the premise of her new campaign with P.E.T.A., the controversial animal rights activist group with plenty of Hollywood support.

Silverstone, already one of the industry's most outspoken vegans, is now rallying against the sheering of sheep for wool.

Here are eight other times beautiful women got naked for this animalistic cause: