A Question about her hair...

I haven't seen the film, but I'm curious about something. Why is Cinderella wearing the exact same messy, ratty braid with the untamed bangs to the ball as she was wearing when she was a servant girl? Doesn't that kinda defeat the purpose of her look?

See, in every other Cinderella story, usually she didn't just get a beautiful ballgown and glass shoes. She got a new hairdo, she was clean, had makeup, a nice headdress (often a tiara), and sometimes even a mask to wear, or a glamour the fairy godmother put on her face. The look was partially a disguise so her stepfamily wouldn't recognize her and attack her at the ball. (Didn't always work, as "Ever After" or "Cinder" will attest to).

So whose bright idea was it only to give her a nice dress and shoes, but do nothing with her hair?! Even the fairy fagfather would have remembered a detail like that!