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Note to celebrities: please keep your clothes on!

That's what an e-mail from CBS to those involved in Sunday night's Grammys broadcast said in so many words.

Deadline.com got a copy of the missive sent from CBS Standards and Practices to the night's performers and presenters.

The e-mail goes into excruciating detail as to what must be covered, including "bare fleshy under curves of the buttocks and buttock crack" and "[b]are sides or under curvature of the breasts." Appropriate clothing was also outlined, including a ban on "sheer see-through clothing that could  possibly expose female breast nipples."

Here is the e-mail in full as reprinted on Deadline.com:

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CBS Program Practices advises that all talent appearing on camera please adhere to Network policy concerning wardrobe.

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 talent’s wardrobe be avoided. This would include lapel pins or any other form of accessory.