Kate Walsh & Jon Hamm: Aveeno Pledge People

Kate Walsh and Jon Hamm sign the Aveeno Active Naturals Pledge Wall at the Film Independent Spirit Awards on Saturday (February 26) in Santa Monica, Calif.

Each celeb signature resulted in a donation for Million Trees NYC, which aims to plant and care for 1 million trees around New York City’s five boroughs.

Also signing the wall held inside the Elle Green Room: Kate‘s Private Practice co-star Taye Diggs, Anne Heche with partner James Tupper, and Amber Tamblyn.