Natalie Portman Dogs Her Dog

Natalie Portman takes her new dog for a walk through the West Village on Tuesday.

The 26-year-old Star Wars actress has been named the most eco-friendly star, after topping a list of celebrities who go out of their way to care for the planet.

Other stars to be honored by the planet-friendly firm include Leonardo DiCaprio, Cameron Diaz, Julia Roberts and Brad Pitt.

Natalie also won a special mention by campaigners at green website Grist.org - who praised her work to save gorillas in Rwanda, her role as the face of a low-energy lightbulb company and the launch of her vegan shoe range.