Kim, 32, graced the glitzy annual event in the standout Celia Kritharioti dress, which featured a plunging neckline that showed off her ample assets, and posed for pictures with her sisters Khloe and Kourtney.
Opting for an androgynous look, 34-year-old Kourtney wore a black trouser suit, white shirt and black ribbon tie around her neck, and almost looked like Kim's date!
Younger sister Khloe, 29, meanwhile, also chose to wear red to the event, sashaying along in a floor-length velvet dress with long sleeves and wrap detail around the waist.
We have to hand it to the Kardashians, they all looked pretty stunning and certainly didn't go unnoticed!
Elton holds his A-list party in West Hollywood each year and it's an excuse for celebs to glam up, watch the Oscars in style and raise money for charity.
During the bash, it seems Kim was quite taken by how amazing Angelina Jolie looked on the red carpet.
She tweeted: "Angelina Jolie....there are no words for how beautiful she is."
Earlier in the night she had given fans an early glimpse of her Oscars dress by posting a selfie taken while in the car.
The mum-of-one commented: "Sneak peek Oscar party glam Dress- Celia Kritharioti. Jewels-Lorraine Shwartz."
Oscars 2014: Red carpet dresses!
Copyright: Rex Features Startraks Photo