Webcheck out our rosita sing costume selection for the very best in unique or custom, handmade pieces from our stuffed animals & plushies shops. How to make your own rosita from sing costume! Rosita (voiced by reese witherspoon) is part of the ensemble cast of sing, an animated film that takes place in a world inhabited by anthropomorphic animals. A weary mother of many children, rosita decides to try out for a singing competition organized by koala buster moon. Webcheck out our sing movie rosita costume selection for the very…