Source: THR

Anne Hathaway and Neil Patrick Harris are reportedly in negotiations to lend their voices to Rio, the new 3D animated project from Blue Sky Studios, the production company behind the Ice Age films. Rio is being housed at 20th Century Fox, which doesn't come as a surprise considering that Ice Age: Dawn of the Dinosaurs was an $882 million worldwide hit this past summer.

Hathaway most recently appeared alongside Kate Hudson in Bride Wars, a $58.7 million domestic hit for Fox. She'll be seen next year in Tim Burton's Alice in Wonderland and Garry Marshall's Valentine's Day.

Harris is known more for his television work on How I Met Your Mother, although he did have a cameo role in both Harold & Kumar films.