In one of the opening scenes, during the song "Belle" (the 'bonjour' song), Belle is walking along carrying a basket on her arm. As she walks about the town, the basket keeps suddenly switching from one arm to the other. Then, just as suddenly, the basket disappears, only to reappear a moment later, and then disappear again!
You can easily tell that this is not a slip up. If you watch the basket, you can see her with both hands holding it, then holds it with her left hand, then holds it with both hands and then holds it with her right hand. In other words, she is changing hands. Watch it again, it's not a slip up