Grammy award show organizers issued an advisory to cover anything that could cause a wardrobe malfunction.
A wardrobe advisory published on Deadline.com warns that "buttocks and female breasts [must be] adequately covered."
"Please avoid exposing bare fleshy under curves of the buttocks and buttock crack. Bare sides or under curvature of the breasts is also problematic," the advisory read. "Please avoid sheer see-through clothing that could possibly expose female breast nipples."
The Grammys have not shied away from showing skin in the past. In 2010, Pink performed an aerial act wearing little more than a flesh-colored body suit. It's not clear whether the dress code applies to performers.
The award show airs Sunday night.