Continuity mistake: When Mia arrives at the cafe she works at the morning after her and Sebastian first dance together, she has a yellow bag, but when her and Sebastian walk out of the cafe later, she has a larger red bag.
Continuity mistake: The first time Mia meets Sebastian, during the traffic jam, she raises her middle finger then quickly lowers it. When she meets him at the bar and we see the scene again, she raises her finger, then waves the hand in denial and, finally, lowers it.
Trivia: At the Oscar ceremony in 2017, the film was accidentally named Best Picture, instead of true winner Moonlight, when presenters Warren Beatty and Faye Dunaway were accidentally handed the wrong envelope. Such a gaffe had never occurred in the Oscars' history before.
Question: I may have missed this, but early in the film, how did Mia and Sebastian get into the empty planetarium? It must have been locked up pretty tight. Did someone let them in? Did they break in? I'm guessing this was explained and I didn't catch it.