Continuity mistake: Near the end of the film, as Bette Midler, Diane Keaton and Goldie Hawn sing the song "You Don't Own Me," watch Goldie's shoes. For the first portion of the song, which takes place inside, she is wearing spiked-heel shoes with multiple straps. Then, as they dance through the doors onto the street, she is wearing shoes with a single strap and a much thicker heel.
Continuity mistake: At the big dinner party they have look out for the man with black hair, gray suit with a turtle neck. He appears in back to back to back scenes - one second he's walking across the room the next he is dancing and a mere second later he's outside smoking. Either he has a twin or he gets around quick.
Continuity mistake: The three women do parts of their "You Don't Own Me" act at two different points in the movie, both times supposedly doing the choreography they had worked out for Cynthia's birthday party, 25 years earlier. But the two instances differ in what Goldie Hawn and Bette Midler do right after the "Ba-ba-ba-ba-ba-ba." The first time, they raise their hands over their heads. The second time, at the very end of the movie, they bend at the knees and put their hands together directly in front of Diane Keaton.