Kim looked typically stunning in the figure-hugging number, which gathered slightly at her trim waistline.
The floor-length frock boasted thin straps with a crisscross design at the center, which held a dark, round, stone medallion.
The SKIMS mogul put on a busty display in the ensemble, playing up her ample cleavage.
The fashionista punctuated the chic look with a pair of open-toe black heels.
She accented the dress with a small, square-shaped gold handbag.
Her raven-colored tresses were ironed bone straight and parted down the middle as they flowed down her back.
And she flaunted a full face of glowy matte makeup that complemented her smooth complexion.
Little Chicago, who Kim shares with ex-husband Kanye West, was clad in a sky blue T-shirt, jean shorts, and white Adidas Sambas.
The mother-of-four uploaded a series of images from Chicago’s birthday party in January.
Several snapsH๏τs featured Kardashian in yellow patterned leggings and a black zip-up hoodie as she held Tatum on her hip.
On the bottom of one, she wrote in white font: ‘Happy 2nd Birthday Tatum. My baby!! I love you so so so much!’
Along with another pH๏τo of the aunt and nephew sharing an affectionate smooch, she wrote, ‘Auntie KiKi’s got you forever!!!’
Khloe reshared some of the posts to her Instagram Stories and added, ‘Tatum has the best aunties in the world.’
Along with a second repost, she said, ‘Tatum is so in love with you Auntie KiKi.’
Thompson had a dinosaur-themed ‘Two-a-saurus’ party that was attended by his various family members.
Khloe was a proud mom as she hosted the gathering in a white, eyelet, sleeveless and corseted mini dress that she teamed with big black sunglᴀsses.
She enlisted party planner Mindy Weiss to transform the outdoor area of her $17M Hidden Hills mansion with life-size dino statues and palm-shaped pool floats.