The singer-actresses -- who play respectively Shira, Peaches and Brooke -- were photographed going into the event at the Zanuck Theater on the 20th Century Fox Studios lot in Los Angeles. Actors dressed as Scrat the squirrel and Sid the sloth also mugged for the cameras.
The fifth installment in the Ice Age film franchise, which follows 2012's Ice Age: Continental Drift, is set for release Friday.
Directed by Mike Thurmeier and Galen T. Chu and written by Michael J. Wilson, the movie also featres the voice talents of returning Ice Age veterans Ray Romano, John Leguizamo, Denis Leary, Queen Latifah, Simon Pegg and Chris Wedge. New to the series are Jesse Tyler Ferguson, Adam DeVine, Nick Offerman, Max Greenfield, Stephanie Beatriz, Melissa Rauch, Carlos Ponce, Michael Strahan and Neil deGrasse Tyson.