Ciara, Britney, Madonna and Mila Kunis get sexy in sparkles while Rihanna makes a rare fashion fail in drab dress

The gorgeous event co-host led the fashion pack as she strutted onto the Red Carpet and flashed the flesh in her skimpy daring gown.

The skintight silver dress split down the side to give a glimpse of her chest as well as revealing her toned, tanned legs from the hip to the ankle.

The popstar pulled her brown hair back into a simple up-do with sultry panda-eye make up so her statement outfit took all the spotlight at the glitzy event in Las Vegas' T-Mobile Arena.

She continued to shimmer throughout the night in a variety of outfits as she helped dish up the awards highlighting achievements in the music industry throughout the past year.

Also rocking the metallic trend was actress Mila Kunis, 32, who wore a strapless, beaded mini dress by Zuhair Murad, revealing her slender shoulders and collarbone by keeping her dark locks up in a high bun.

Popstar Britney Spears proved she was the ultimate pop princess in one of her many eye-catching clothes changes of the night.

The Toxic singer's abs were on full display in a turquoise sequin two-piece consisting of a bodycon knee-length skirt and matching crop top.

As she grinned for the cameras, the skirt featured sheer panelling which gave onlookers another peep at her toned thighs.

The dress, which was designed by Philipp Plein, left little to the imagination as it featured hip high splits on both sides and no sides, allowing the 30-year-old to show off plenty of side boob and toned midriff.

The singer completed the look with a pair of strappy silver high heeled sandals.

Former X Factor USA contestants Fifth Harmony proved they were all grown up as they posed together on the red carpet in an array of slinky black gowns.

Normani Hamilton put her ample cleavage on display in a plunging sweetheart neckline number with thigh high split, while Camila Cabello opted for a backless dress with metallic choker neckline detail.

The girl band didn't hold back during their performance either, wearing a mixture of skin-tight pink sparkly leotards which allowed the various members to show off their legs, tummies and cleavage.

Madonna forged a fashion triumph on-stage while belting out a tribute to Raspberry Beret singer Prince, who died earlier this year.

She looked chic in a swanky shimmering silver tailored suit.

Not all the celebrities on the red carpet flashed the flesh though, as Demi Lovato covered up in a pair of high-waisted trousers, classic Chanel jacket and a black lace top, which gave just a hint of toned torso.

And singer Kesha, who made her red carpet return following her on-going legal battle with Dr. Luke, chose a matador-style purple suit which featured gold embroidery on the jacket and trousers.

The 29-year-old added a white shirt and black ribbon tie and a pair of gold sparkle heels to complete her quirky look.

Yet it wasn't a stylish affair for every star.

Chart-topper Rihanna looked worlds away from her signature saucy style and went for a demure brown dress.

The no-frills one-piece was buttoned up the front and had long sleeves and a simple v-neckline.

RiRi kept her hair in a short, fringed style with natural make-up but added a hint of bling with her buckled shoes.

On-stage, things didn't get much better for the Umbrella singer.

She blasted out one of her hits wrapped in a strange neon green feather boa

Though All About That Bass singer Meghan Trainor got the memo about the silver style her ankle-length, high-neck gown looked a little OTT.

With heavy sparkles, shoulder pads and long sleeves the cute pop princess could have been an extra in a futuristic film, though the skintight clobber still emphasised her sexy curves.

Meanwhile brunette Ariana Grande wowed on the red carpet for all the wrong reasons.

The star took a tumble while she was chatting to a reporter.

US gossip channel E captured the action, showing the star left wide-eyed in fear and gasping for breath as she teetered on her huge black heels.

As she fell she opened out her arms to try to break her landing and squealed: "I almost broke my ass!".