Miley Cyrus shows off major sideboob at Grammys pre-party, better not flout the naked rule tonight

The Grammys organisers have made it VERY clear they are not up for much flesh-flashing at tonight's ceremony.

Miley Cyrus showed off an awful lot of sideboob at the pre-Grammys party last night. Copyright [Getty]

So we're hoping Miley Cyrus got all of hers out of the way when she showed off RATHER A LOT of side boob at the pre-Grammys party last night.

The 'Hannah Montana' star, who is known for revealing her body in daring clothes, hit the warm-up bash in LA in a very revealing black dress.

And she almost suffered a wardrobe malfunction in the shape of a nipple slip as she posed for photographers in the frock, which barely covered her breasts.

The 20-year-old had to keep adjusting her Emilio Pucci halter-neck gown as she partied with mates at the bash honouring L.A Reid at the Beverley Hilton.

Bosses at CBS, who are broadcasting the music ceremony tonight, have told celebrities to cover up "buttocks and female breasts".

And bookies have predicted that saucy Bajan popstar Rihanna will be the first to flout the rules, by having some kind of wardrobe malfunction after she wore a see-through lace dress at last year's awards.

[Related story: Bookies reckon Rihanna will be first to flash the flesh at Grammys]