CBS standards and practice division has issued a wardrobe warning to artists attending Sundays Grammy Awards show in Los Angeles.

Deadline.com was the first to report the caution regarding acceptable attire for the high-profile gala.

“CBS Program Practices advises that all talent appearing on camera please adhere to network policy concerning wardrobe,” the networks email message to attendees said.

“Please be sure that buttocks and female breasts are adequately covered. Thong-type costumes are problematic. Please avoid exposing bare fleshy under curves of the buttocks and buttock crack. Bare sides or under curvature of the breasts is also problematic. Please avoid sheer see-through clothing that could possibly expose female breast nipples. Please be sure the genital region is adequately covered so that there is no visible puffy bare skin exposure. Please avoid commercial identification of actual brand name products on T-shirts. Foreign language on wardrobe will need to be cleared.

“OBSCENITY OR PARTIALLY SEEN OBSCENITY ON WARDROBE IS UNACCEPTABLE FOR BROADCAST. This as well, pertains to audience members that appear on camera. Finally, The Network requests that any organized cause visibly spelled out on talents wardrobe be avoided. This would include lapel pins or any other form of accessory,” the message said.