The couple that laughs together, stays together — and that is definitely the case for Kristen Bell and Dax Shepherd.

OK! GALLERY: KRISTEN BELL AND FIANCE DAX SHEPHERD ATTEND NYC SCREENING FOR THEIR FILM HIT AND RUN

The engaged couple were having a goofy good time as they celebrated the premiere of their movie Hit & Run alongside co-star Bradley Cooper at the Regal Cinemas at L.A. Live last night.

Joining the trio out at the big event was Dax's Parenthood co-star Joy Bryant, Olympic swimmer Tyler Clary, Dancing With the Stars' Gilles Marini and many more.

Kristen and Dax showed up in style last night, with Kristen Tweeting: "Just a couple a cool kitties pulling up to the @hitandrunmovie premier in a Class 1 off road race car... http://say.ly/gWC3YPL"

OK! GALLERY: KRISTEN BELL SPARKLES AT THE OPENING OF THE TOPSHOP FLAGSHIP STORE IN LAS VEGAS

Hit & Run hits theaters on Aug. 22.