Environmentally-conscious celebrities headed to the National Resources Defense Council's 20th Anniversary party in Beverly Hills on Saturday night. It was no surprise to see two of our favorite eco-loving celebrities Cameron Diaz and Leonardo DiCaprio walking the red carpet. Cameron's also had some fun movie news to celebrate — she's in talks to star in a legal comedy called Bobbie Sue. Jon Hamm was also there showing off some scruff while still looking dapper in his suit. Earth Day was on the 22nd and a party celebrating our natural resources was the perfect way to end a particularly environmental week.
To see more photos including Amy Smart, Linda Evangelista, Lisa Kudrow and more just
Images include: Amber Valletta, Amy Smart, Brian Grazer, Cameron Diaz, Chelsea Handler, Heather Graham, Jon Hamm, Julia Louis-Dreyfus, Leah Remini, Leonardo DiCaprio, Linda Evangelista, Lisa Kudrow, Natasha Bedingfield, Mark-Paul Gosselaar, Rosanna Arquette, Tom Ford