Are we supposed to take the character in consideration as well, or only the costume+wig? Supposing it's the latter, I'd say that, while it doesn't look bad, it is too similar to the one VV already has, which is much better than this one you're showing. Besides, I don't think that being sexy is VV's priority, at least it doesn't seem like her style. If we had such costume covering her belly and a greater part of her legs, it'd be halfway into an amazing one. Maybe with the upper half being some sort of maillot/swimsuit - if that's the correct word for it - and her bottom going slightly below her knees, or something like that.
Last but not least, a different color would be necessary. Maybe a mix of some dark shade of gray with some navy blue?