Alicia bares all

Alicia Silverstone goes naked in a new ad promoting vegetarianism for PETA. The 30-second ad was to air about two dozen times in Houston today, the People for the Ethical Treatment of Animals said. Houston was picked for the commercial's launch because it is often high on lists of cities with unhealthy eating habits (named the 6th highest fattest city in the nation by Men's Fitness mag this year). "I wasn't always vegetarian, but I've always loved animals," Silverstone said in a statement. "Physically, the effect has been amazing."