Reference 2: When Robert is staring at Giselle is the same in Cinderella.
Reference 3: The waltz is like Sleeping Beauty
Reference 4: The singing is also in Cinderella where Robert sings in Giselle's ear But she doesn't sing but it counts anyway.
Reference 5: Roberts costume is similar to the Beasts(already mentioned in another article I did)
Reference 6 : Not a disney movie but when Robert is satring at Giselle it looks like Anya and Dimtri in a way where Dimtri is lookin at Anya at the top of the stairs .
Not in ballroom reference
Note: Anya and Dimtri also remind me of Giselle and Robert I know some people will say no but I think they look so much alike in a way.