The little blue people have recruited three new big people for their next big-screen adventure.

Christina Ricci, Brendan Gleeson and J.B. Smoove will soon be singing "La, la, la la-la-la" (at least in their heads) as they've signed on to appear in the currently untitled sequel to last summer's box office hit, "The Smurfs," according to Heat Vision.

The plot of "The Smurfs 2" (which is what we'll call it until advised otherwise) hasn't been revealed yet, though certain Smurfy character details have emerged with the casting news. Ricci will be providing the voice of Vexy, an evil version of Katy Perry's Smurfette (we think we remember that episode …?), while Smoove will voice a "naughty" new character named Hackus and Gleeson will play Victor Doyle, the stepfather of Patrick Winslow (Neil Patrick Harris).

Ricci, Gleeson and Smoove join a returning cast of Harris, Perry, Jayma Mays, Sofia Vergara, Hank Azaria, Jonathan Winters, Alan Cumming, Fred Armisen, George Lopez, Anton Yelchin and John Oliver. Raja Gosnell will also be back in the director's chair.

Okay, we admit it - we kind of liked "The Smurfs," because … well, it's kind of hard not to. And we expect we'll probably kind of like the sequel, too.

Christina Ricci is certainly no stranger to TV-to-film adaptations after appearing in "The Addams Family," "Casper" and "Speed Racer" and will next be seen being seduced by Robert Pattinson in "Bel Ami," opening June 8. Brendan Gleeson will next be seen (or at least heard) in "The Raven" and "The Pirates! Band of Misfits," both opening April 27, and J.B. Smoove, who can currently be seen in theaters in "Think Like a Man," will next be seen in "The Dictator," opening May 16.

Production has already commenced on "The Smurfs 2" with a look toward a release date of July 31, 2013.