"The Lorax" co-stars Taylor Swift, Danny De Vito, Zac Efron and Betty White have teamed up to launch a new reading initiative.
 
The stars 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 March 2.
 
"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.