By Jeff Labrecque
Updated March 17, 2011 at 06:37 PM EDT

Taylor Swift has joined the cast of Universal’s 3-D animated film, The Lorax, based on the famous Dr. Seuss children’s book about preserving the environment. Danny DeVito is voicing the fuzzy, tree-loving Lorax, Ed Helms is the greedy Once-ler, and Zac Efron plays Ted, the young boy who seeks out the Lorax. Swift will voice Audrey, the girl of Ted’s dreams.

Rob Riggle and Betty White will also voice characters for the film, which will be released on March 2, 2012.