Twentieth Century Fox Consumer Products and Bagdasarian Productions have partnered with Build-A-Bear Workshop for make-your-own Alvin and Brittany plush characters in stores nationwide. The new plush support the release of Alvin and the Chipmunks: Chipwrecked!, which hits theaters Dec. 16.

Shoppers can now make their very own Alvin and Brittany full size plush, as well as mini Alvin and the Chipmunks friends Simon, Theodore, Jeanette and Eleanor, all dressed in island apparel.

Build-A-Bear Workshop will also offer a Chipwrecked sweepstakes on the company's Facebook page, open until Dec. 11. The grand prize is a screening of the film for the winner and up to 300 guests.

“Build-A-Bear Workshop’s latest product line highlights the iconic features of both Alvin and the Chipmunks and The Chipettes in a merchandising program that is sure to inspire guests this holiday season," says Jeffrey Godsick, president of Fox Consumer Products.