The Lorax co-stars Taylor Swift, Danny De Vito, Zac Efron and Betty White have teamed up to launch a new U.S. reading initiative.
The trio each voice characters in the highly-anticipated Dr. Seuss film and, as part of their commitment to promote the benefits of literacy, country singer Swift, Efron and White have shot a new campaign for the National Education Association's Read Across America Day on 2 March (12).
The Hangover star Ed Helms has also signed up to help.
In the new ad each star recites one line from a wacky poem to encourage kids to read more.
Mean hitmaker Swift has been a longtime education advocate - she recently donated 14,000 books to the Nashville Public Library in Tennessee.