PARIS–Paris fashion week kicked off yesterday with a sexy bang. Anthony Vaccarello‘s spring 2012 brought the sexy back in a big way. It’s inaccurate to even call the slits on his revealing LBDs thigh high–hip high is more like it. The same amount of thigh would be exposed in a Baywatch bathing suit. It is a very hot look. Especially on Karlie Kloss. One thing though? How do you wear underwear in these dresses? I guess you just don’t. So a word of caution to future Vaccarello-wearers, exit your limos very very carefully.