Last night, Hollywood's Greenest celebs gathered at a benefit to help end Global Warming. The organization hosting the event at Avalon, Global Green USA, is a favorite of the environmentally conscious celebrity community so it's no mystery how they were able to get such star power. Penelope and her gorgeous sister Monica walked the green carpet side by side, while Penelope's rumored fling, Orlando, posed alone. James Blunt and his beautiful Petra also graced the event. Golf claps and congratulatory nods for Joshua Jackson and his girl Diane Kruger, who are smoking hot as usual lately. The famously pro-green Leo was at the event, but (pout) decided to avoid the carpet. Let's just hope everyone opted out of the stretch Hummer limos and stuck with carpooling in their Priuses (Priui?) for the night. Yay for environmental awareness!

For more of the green carpet including the boys of Maroon 5, Chevy Chase, and more just read more

Images include Orlando Bloom, Andrea Bowen, Chevy Chase, Diane Kruger, Penelope Cruz, Joshua Jackson, Petra Nemcova, Adam Levine, Jesse Carmichael, James Blunt, Monica Cruz

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