Continuity mistake: In the early scene, when Maura is talking to the man in the corner, that she thinks is homeless, she stands up and has a green bag on her shoulder. When she asks for the sunscreen back, there is no sign of her bag. Then it's back on her shoulder.
Continuity mistake: At the end of the early scene with the homeless guy, Maura gets told to 'eff off' by the not-so-homeless lady. In the shot where the four letter word is pronounced, there's no sun directly hitting the banner and the area with tables, as opposed to the previous and following shot. (00:01:50)
Continuity mistake: When Amy Poehler is in the attic and falls through the ceiling, she loses her shoes. However, as she is lifted up barefoot and walks further to fall again (on her bed this time), she has her shoes on. (01:13:50)
Continuity mistake: When the girls are trying on dresses, Brayla the assistant rolls her eyes in a close up shot. Cut away to the long shot and her head is looking up.