Sexy actress Alicia Silverstone has signed to star opposite SARAH MICHELLE GELLAR and Freddie Prinze Jr in the second installment of the Scooby-Doo franchise.

CLUELESS beauty Silverstone will play HEATHER, a relentless reporter who is aided by a museum curator.

The movie started shooting last week (ends18APR03) in Vancouver, Canada, and will be released in March (04).