Sing, due out over the holidays, chronicles an adorably furry singing competition.
For more on the Toronto International Film Festival, go to PEOPLE.com/tiff
The musical comedy from Garth Jennings finds Witherspoon as a pig, Johansson as a porcupine, and McConaughey as a koala, with their other costars rounding out the animal kingdom.
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Witherspoon brought husband Jim Toth as her date to the Toronto premiere, posting a photo with the other half of the “smitten” couple.
McConaughey also brought his spouse, Camila Alves, along for the event.
Sing hits theaters on Dec. 21.