The one on the right looks more realistic to me. On the left it looks more like she's standing in a mild snowstorm, or maybe a bubble machine gone mad. I think a slight bit of reflectivity in the skin would enhance the "wet" effect, to give it a slight sheen. Also I'd remove the drops from her face and neck, as the hair would be plastered against her head if she'd doused her face. I do like the pose on the left a bit more. The slight tilt to her head gives her that touch of cuteness.