I don't usually make these types of journal entries but after seeing (what I presume to be) some Sirenix concept pictures, I feel like I have to share them: http://www.michaelsfavorites2.com/winxclub3/newspage.html
Seriously, those original designs looked so much better than how the finals turned out. Season 5 would have been so much better if Sirenix looked closer to the concepts (at least, visually speaking). How did it even turn into that bland, "glitter vomit" skirt we have now?
There are some selkie concepts too, but they're less interesting.