CBS sent a Wardrobe Advisory to all attendees and performers in advance of the 55th Annual Grammys, which will be broadcast this Sunday.

Asking that all talent appearing on camera “adhere to Network policy concerning wardrobe”, the email stipulated that “buttocks and female breasts [must be] adequately covered”.

The email which was leaked to Deadline and came attached with an image of Pink performing in a barely-there costume at the 2010 Grammys, added: “Thong type costumes are problematic.

“Please avoid exposing bare fleshy under curves of the buttocks and buttock crack.

“Please be sure the genital region is adequately covered so that there is no visible <<puffy>> bare skin exposure,” it stated.

The requirements, directed mostly at female awards attendees, also include the specific instruction to “avoid sheer see-through clothing that could possibly expose female breast nipples”.

And even gowns with plunging necklines aren’t safe for the guidelines, which says: “Bare sides or under curvature of the breasts is also problematic.”

CBS sent a Wardrobe Advisory to all attendees and performers in advance of the 55th Annual Grammys, which will be broadcast this Sunday

It remains to be seen if the celebrities, used to getting maximum publicity for wearing minimum clothing, will follow suit.

However, those modest few who like to use the red-carpet as a sounding board for meaningful (or provocative) statements will also have to tow the line.

CBS stated in capital letters: “OBSCENITY OR PARTIALLY SEEN OBSCENITY ON WARDROBE IS UNACCEPTABLE FOR BROADCAST.”

It continued: “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.”