Kim, who is due to give birth in July, opted for a white form fitting, floor-length gown which hugged her blossoming figure in at all the right places.
The US star teamed her v-neck frock with a simple pair of white court shoes and went for ultimate Hollywood glamour when it came to both her accessories and hair.
She completed her look with a dark berry lip and a matching manicure, and a fluffy white stole to keep off the chill.
Kim appeared to have a whale of a time at Elton's bash, which was held in Los Angeles, and was joined by her sisters Kourtney and Khloe and a few other famous faces.
Taking to Twitter, the expectant mum shared a photograph of the Kardashian trio sat alongside the likes of Heidi Klum and US actress and model Molly Sims. She then commented: "Girls night out!"
Kim also posed for a candid black and white picture with Heidi, admitting: "Love her @HeidiKlum."
Prior to leaving for the glitzy event, the reality star - who is dating rapper Kanye West - revealed just how excited she was about the Oscars.
"I love Oscar Sunday! I can't wait to see what everyone wears!" she tweeted.
Check out all of our favourite dresses from the night in our gallery below!
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