The eco buzz is amped up in Hollywood. Living an eco-friendly lifestyle has become more than simply eating organic -- it has spilled into the lifestyles of the stars. And many of those conscientious consumers are walking the higher road in their Birkenstocks, saving the planet one celebrity at a time.

Select a celebrity: Kirstie Alley Rob Lowe Patricia Arquette Amy Smart Lisa Rinna Alicia Silverstone Matt Damon Julianna Margulies Jon Bon Jovi Jane Seymour Natasha Henstridge Sheryl Crow Rachelle Carson-Begley Ed Begley, Jr. Like who, you ask? Julia Roberts lives an environmentally passionate life -- solar panels and water conservation garden at home and even reading library books to save paper. George Clooney bought a Tango T600 electric commuter car for $85,000 (who said saving the planet was cheap?). Leonardo DiCaprio has tooled around Los Angeles in a Prius hybrid for a few years while bike riding in New York City. Cameron Diaz has her own Prius hybrid. Jackson Browne has outfitted his ranch with an impressive solar and windmill system, as well as other installations and inventions that make the compound self-sufficient. Who says the stars can't make a difference? Here are some celebs who talk about their own green spending habits. Next » Photos courtesy of Retna.com