I think they have it there, but if you want to make sure you have Mulans outfit, here is the link to order from the
Disney store.
http://www.disneystore.com/girls-co...lection-for-girls/mp/1309145/1000763+1007603/
There are 3 choices for hairstyles, two other than the bun. One adds a long fake hair piece, called the Diva. The other adds a pink hair, called a Pop Princess style. The courtyard package is the most recent added and it has a different hairstyle (there is a thread on here about it) but it also comes with an outfit. It comes with a shirt and a tutu and is $89.95.
From what I can remember from the movie, honestly, Mulans hair was pulled into a bun when she wanted to look like a man. Other than that, it was down. So the closest she may get to looking like Mulan could be to get the bun and not add the tiara, but the headpiece in the link above. Or to get the Pop Princess Style.
As to the nails, my daughter got a choice of either blue or pink polish during her makeover, but was given both bottles to take with her. You also get the left over makeup and face jewels not chosen during the appointment. They put everything in a little BBB drawstring backpack, so you can easily extend the magic later. I don't think we got glitter (pixie dust) to bring home.
Here is the link to a post on the other long BBB thread that shows you pictures of the hair styles and the makeup. It is old, but from what I saw when dd had her menu in June, pretty accurate.
http://www.disboards.com/showpost.php?p=26395420&postcount=1