Factual error: Curiously enough, Michelle's mess in the bathroom with the self-tanning spray seems to be mostly made by footprints everywhere (but you don't tan your palms and soles, and the bottom of the foot is what she is using to lean on the wall anyway) while the spray she continues to apply does not color the tiles and towel in the slightest and nothing drips from the smooth surfaces.
Continuity mistake: When Kirsten Bell tells to a Dorito-breath Melissa McCarthy "Michelle, you can't sleep in my bed, I don't want you in here", Michelle's hand is in a completely different position between shots. (00:23:50)
Continuity mistake: When Michelle gets catapulted onto the wall and begins wailing, her right arm is straight, semi-parallel to her shoulders. Next shot and it is bent, hand up to the level of her face. (00:22:55)
Character mistake: When Michelle attends her first Dandelion meeting, the banner on the wall says "Dandelions Troop 627". Troop is misspelled as troup. (00:35:00)
