Covering up completely on the red carpet runs the risk of looking too conservative, but flashing skin poses its obvious risqué set of problems. What's a celebrity to do? Sheer gowns tastefully walk the line between sexy and reserved, revealing skin while remaining fully clothed. While the sheer concept is nothing new, we have noticed a recent surge of stars opting for the transparent cloth over its opaque counterpart. We really took note of the trend when Jennifer Lawrence made headlines hitting The Hunger Games: Catching Fire premiere in a sheer gray knit Christian Dior Couture gown. Then, in true Country Music Awards spirit, Carrie Underwood glammed it up in a sheer Ralph & Russo Couture number dotted with all-over crystal embellishments. More recently, Pippa Middleton embraced—and perfected—the effect to a (royal) tee. And as a relative to royalty, Middleton did her due diligence, keeping her look sophisticated and utterly refined by wearing a nude slip underneath to prevent accidental slip-ups. From overtly see-through to subtly transparent, it's clear that sheer is in.