The 37-year-old made sure all eyes were on her in the daring dress, which featured a low cut back.
The curve skimming white frock highlighted her tiny waist, thanks to a cut out detail and she went braless to avoid any awkward underwear lines.
Her long dark hair fell down her back and she accessorised with a silver choker and various items of Tiffany jewellery.
The star skipped the American Music Awards for the star studded bash, which was also attended by her mum Kris Jenner, Priyanka Chopra, Zoe Kravitz and Mary J Blige.
Mum-of-three Kim is currently in the best shape of her life after losing 1.4 stone this year.
But she’s manged to do without running on a treadmill as she and her bodybuilder trainer spend 90 minutes a day lifting heavy weights.
Speaking to E! News recently, she said: "I work out about an hour-and-a-half every single day, heavy weights. I don't do a lot of cardio. But honestly, like even my mom pulled me aside maybe a week ago and pulls me in a closet and is like: 'What are you doing? I don't care what, I just need to know.'
"I've been working out really hardcore with a bodybuilder for one year. September is our one-year anniversary.
“I've lost 20 pounds and I'm really proud of that. I was almost 140 forever and now I'm like 116 and it just feels good. I didn't see results right away, but when you stick with something and you're consistent, you will."
However, although she still likes to demolish a tub of Häagen-Dazs ice cream once in a while, she's tried hard to cut down on the amount of sugar she has.
She explained: "I don't really eat sugar the way that I used to. It doesn't really do it for me. I've kind of been trained to just eat a lot healthier than I used to. I used to just eat anything and everything and I loved it. And so I really do control that now. … I don't want to ruin it by just stuffing my face."
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