Sex sells. But what about purity? A K-Swiss ad campaign features tennis star Anna Kournikova in a white sports bra and a teeny-tiny mini skirt, showing off her midriff like a high school ho. Now that they’ve got your attention with some T&A, what’s the slogan say? “Keep It Pure.” Um, what?! While we’re sure that Anna Kournikova is a lady, when there’s a billboard of her rolling around on her back on the tennis court, chastity doesn’t come to mind. And why should it? We’re not sure why K-Swiss is trying to sell sneakers with abstinence — something that even their cover girl Kournikova, who has been doing the horizontal mambo with Enrique Iglesias for years, doesn’t represent. And everyone knows, like a modern woman, it’s impossible for white sneakers to not get a little dirty.