Where did they get those outfits?

I'm not sure! They are fantastic though, aren't they? I seriously want one.

I do too! If you could find out, that would be awesome!

We bought ours from http://www.hellocosplay.com/ but right now I'm having trouble getting to the site. You can find similar costumes on a variety of sites including:
http://www.cosplaymagic.com/vampireknight.html
http://www.mooncostumes.com/cat/349

I will note that the ones we bought have horrible pants. I use a plain black pair of pants I already owned instead and we are looking for white pants to replace Alison's with. Also, the ties with the ones we have are the kind that look real but are essentially ties on zipper tracks. I use one of my own ties with my costume. Aside from those minor issues, I love my costume!

I love the black and red combo!

They were very popular at Animazement in those sweet outfits!

yay, you made it large! :)

(but really, great photo) :)

That's just fuckin' beautiful.