Gisele Bundchen1. Gisele Bundchen: The eco-friendly supermodel is no stranger to spreading her love for the earth! She shares green tips on her official website, founded the Clean Water Project, launched an eco-friendly skincare line, and even lives in a 22,000-square-foot green home to boot.
If that's not enough, Bundchen also has her own cartoon on AOL called Gisele and the Green Team aimed at helping kids become environmentally responsible. Gotta love a gorgeous gal with such a big heart!
Hayden Panettiere2. Hayden Panettiere: America's favorite former cheerleader is not only a teen queen, she's a green queen too!
Well known for her fight to save marine life (who can forget her arrest warrant in Japan after protesting whale and dolphin hunting), she's been given the prestigious Genesis Award by the Humane Society for her environmental and animal activism.
The real-life hero is also not afraid to get snapped by paparazzi showing off her recycling skills, frequently carrying reusable grocery bags.
Olivia Wilde3. Olivia Wilde: Olivia Wilde proves that being vegan helps one shine from inside out. The animal lover and activist is an avid supporter of green living, having said she aims to leave the planet "a little better than she found it".
Natalie Portman4. Natalie Portman: From designing a vegan footwear line to her involvement with Global Green USA, the talented Natalie Portman is clearly oh-so-devoted to the environment.
The stunning vegetarian is even eco-friendly when it comes to her jewels, using certified conflict-free diamonds and recycled platinum in both her engagement ring and wedding bands from hot hubby Benjamin Millepied.
Alicia Silverstone5. Alicia Silverstone: The adorable actress is a devout vegan, environmentalist, and animal-rights activist-which means she swears off all fur, leather, and pretty much any food from an animal source. Even her rescued four-legged friends are vegans!
With such a passion for the environment, it's no surprise this celeb cutie lives in a solar-paneled home and is creator of The Kind Life, a guide to living your healthiest, happiest life to the fullest, while taking care of mama Earth at the same time!