My least favorite is that
X-Treme X-Men one, but I don't really like the current one either. As beautifully as Yardin and Eaton drew Storm, that costume still looks "bargain basement" to me.
Even when Alan ("He-who-when-drawings-of-Storm-are-considered-should-be-known-as-The-Man") Davis was last drawing
Uncanny, it didn't appeal to me (he didn't design it).
The pattern on the cape makes it look tattered...

Is this supposed to approximate lightning or an animal pelt?
The sash(?) around the waist with the lightning clasps is uninspired.

The whole thing is just...bland. It actually looks like a homemade Halloween costume! A woman who's been to the farthest reaches of the galaxy could do better. (I sound like that Blackwell dude...)
Anyway, Storm's costume sorely needs a re-design.