The Grammys Hall of Shame: Rihanna, Rita Ora and buttock-baring 'Matador' Madonna lead the WORST dressed list on the LA red carpet

It's music's biggest night of the year, and all eyes were on the red carpet as stars arrived to the 57th Grammy Awards at the Staples Center in Los Angeles.

Unfortunately for Madonna, jaws were dropping for all the wrong reasons. The 56-year-old star's ample chest was spilling out of her disastrous Givenchy burlesque get-up, complete with corset, leather gloves, fishnet stockings, and thigh-high boots.

Barbadian beauty Rihanna, 26, resembled a giant cupcake when she arrived swamped in a frothy lurid pink Giambattista Valli creation. And British crooner Charli XCX, 22, left host E host Giuliana Rancic, 40, almost lost for words when she turned up in a shiny Pink Panther-esque Moschino tuxedo and powder pink faux fur shrug.

Massive: Rihanna, meanwhile, turned up in this staggeringly frou-frou pink dress which she claimed to have bought on the internet

Madonna, who at one point turned from the cameras and lifted her skirt up flash her thong-clad derriere, sent Twitter into a fashion feeding frenzy, with many likening her to a 'matador'.

When Ms Rancic told Charli XCX that she has 'really stepped outside the box', the Boom Clap singer replied: 'I hate boring fashion. I wanted to so something 80s and fabulous. I like unpredictable.'

Ex Pussycat Dolls star Kaya Jones, 30, made sure she stood out with her ruffled black gown - which was hitched up to just below the knee - and the yards of fabric that trailed behind it. Ms Jones bundled her lurid red hair atop her head and wore lashings of heavy make-up to finish her look.

Rita Ora, Meghan Trainor and Paris Hilton also made some cringeworthy fashion faux pas. Miss Ora's shiny sequinned dress made her look more like an award than an award-winner, while Miss Hilton's outfit that would have been more at home on the set of Dancing With The Stars.

And Miss Trainor's sheer lace dress was ruined by the minidress beneath which came off too gray under the bright red carpet lights.

Na wa