It looks best on Stam (I think that's her in the middle? Bit small to tell) but it's a cover shoot so there's much more styling, pinning, photoshopping involved which makes it more difficult to compare. I love Gemma too though, it always reminds me of snow white on her.
As per Allan's comments above... the gloves and black beanie are one way of wearing it, but Claudia's way with the boots and sex kitten hair is just stand-out.
I know. i wish we could morf the two. I do give claudia snaps though. TO me she makes it look classier and cleaner. Elsa to me looks already like she'd be rolling around in the gutter with that ensamble in an hour. Major points for the boots and high hair.