Going green has never been more fashionable thanks to a slew of eco-friendly products—and their celebrity supporters! Julianne Moore leads the charge with her limited-edition label for Kiehl's organic Acai Damage-Protecting Tonic Mist (Pharrell Williams, surfer Malia Jones and artist Jeff Koons also front the campaign). One hundred percent of the proceeds from the spray's sales benefit the Rainforest Alliance. Fashion brands and retailers are also celebrating Earth Day with special initiatives. Loomstate will plant a tree with every purchase made today, while Louis Vuitton is donating 10% of today's online sales to Global Green USA. Rock & Republic is offering 20% off a new pair of jeans, just for donating an old pair to one of its stores! Check out more eco-friendly products & deals in the gallery below.