Big Time Christmas - James Maslow, Carlos Pena, Miranda Cosgrove,Kendall Schmidt, Logan Henderson

The guys of Big Time Rush are teaming up with iCarly star Miranda Cosgrove and rapper Snoop Dogg in the upcoming hourlong special "Big Time Christmas."

Catch an exclusive sneak peek from the Big Time Rush Season 2 premiere

Just as the Kendall, James, Carlos and Logan are about to head home for the holidays, their boss, Griffin, tells them they must record a three-song holiday EP — and two must feature celebrities.  Serendipitously, producer Gustavo gets hit by Snoop Dog's limo and persuades him to help out, while the group also gets Cosgrove to take part.

VIDEO: Big Time Rush's big dreams come true

In this exclusive clip, Cosgrove duets with Big Time Rush on "All I Want For Christmas is You."

"Big Time Christmas" premieres Saturday, Dec. 4 at 8/7c on Nickelodeon.