Continuity mistake: In the beginning of the movie for the song "Belle", her dress is tucked into her belt, exposing her under undergarments, for majority of the song. Then when she enters the library to exchange her book, her dress is down. (00:04:50 - 00:06:30)
Beauty and the Beast (2017)
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Directed by: Bill Condon
Starring: Ewan McGregor, Ian McKellen, Emma Watson, Luke Evans, Dan Stevens
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More mistakes in Beauty and the Beast
Lumière: You must forgive first impressions. I hope you are not too startled.
Belle: Why would I be startled? I'm talking to a candle.
Lumière: Candelabra, please. Enormous difference.
More questions & answers from Beauty and the Beast
Answer: She didn't have to, the second Belle proclaimed her love for the Beast, the spell was broken. She would have seen her use her magic to reverse the curse. It would be obvious to everyone she was an enchanted being.