Marsai Martin is giving audiences the feel-good family film of the summer. The 16-year-old actress guest hosted Wednesday's ET, and dished all about her new flick,, and how she didn't realize Kim Kardashian was her co-star!
ET also got an exclusive look at the first trailer for the Paramount animated movie.Martin plays a dachshund named Liberty, while the star voices Delores the poodle.