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.

Miley Cyrus hit the party in a floor-length revealing black dress. Copyright [Wenn]

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.

Miley spent lots of the evening chatting to popstar Katy Perry, who

was much more appropriately dressed in a pearl-covered floor-length


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

The note reads: "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."

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]

[Related story: Justin Timberlake plans Grammys comeback surprise]

Miley Cyrus cringes at her long-haired days

Miley says her fiance Liam Hemsworth loves her short hairstyle