Kim, who is expecting her second child with rapper husband Kanye West, made a show-stopping entrance in the eye-catching number, which featured feathered shoulder detail.
Thanks to the sheer number, the 34-year-old showed off her black bra and high-waisted pants, which also hid any hint of a bump.
Enjoying the spotlight, Kim struck a pose in front of the cameras, and once joined by Kanye, she beamed from ear-to-ear as the couple indulged in some public PDA.
'All Day' rapper Kanye was laughing as he stood behind her and the loved-up couple appeared to share a private joke.
In a super-teaser at the end of Sunday night's mid-season finale of Keeping Up With The Kardashians, Kim revealed she was pregnant again.
Following a doctors appointment, Kim spilled the beans to her sister Khloe Kardashian. She told Khloe: "I just got the blood test back, and I am pregnant!"
No doubt, both Kim and Kanye are ecstatic at their baby news, as they have both revealed their desire to expand their family.
The couple are parents to daughter North, who will turn two in June, and now she'll be a big sister!
Following an outpour of congratulations, talk also turned to what Kim and Kanye will call their second child, and according to Twitter, it will be South!
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