Is it puppy love for these famous costars' canine companions?
Both girls brought their dogs to work on the set of their movie in Detroit—and the two pooches seemed to get along just fine despite their size difference.
One girl is famous for vamping on screen, while the other's been criticized for vamping onstage.
Think you know which celebs are having a play date with their pups? Find out after the jump...
Ashley's dog, Marlow, is the smaller one, while Miley's is the big white one, who goes by Mate.
Nice to see everyone getting along so well!
See more famous furry friends in our Very Important Pets gallery!