Vavan (..?)- Again, nothing jumps out as incorrect, proportions wise. Well done. (Her hair does go both in front of and behind him at places, though. That's... interesting, to say the least. XD)
Breakfast Club: I would venture the guess that the eyes are perhaps a little lower in their heads than they would normally be, but besides that, nothing much. (I'd comment on how you've definitely fixed the weird boobs problem, but what am I supposed to say, nice boobs? Yeah, no.

Allison, Kairi, and Ariana: Nice heads, nice attention to hair and outfits, but DEM LEGS. XD You could shorten them all legs by half and it woul look a bit more realistic. Heck, I'm sure any given pair of legs is as tall, if not taller, than an average person. XD