Don't feel bad on getting Bratz confused, it's seriously easy to do.
There are so many bratz it is not hard to not know who is who. Bratz first started back in 2001 and there are 100's of bratz at this point.
I've been collecting them for a long time but since I'm an out of box collector I have no idea who some of mine are. Plus I redress them so it's really difficult if you don't keep a list of who is who and how they officially look in box, especially once they've been redressed.