The couple attended a contemporary design show hosted by Surface magazine as part of the Art Basel Miami event in Miami, Florida.
Kim smouldered and showed off her curves in the figure-hugging gown, as well as flaunting her cleavage with the embroidered slash across the chest.
With long sleeves, an asymmetric wrap and a front split, Kim oozed sophistication and teamed the outfit with black pointed heels.
Keeping her sleek brunette hair to one side, the 33-year-old's make-up was done to perfection.
Rapper Kanye only had eyes for Kim and was captured admiring his fiancée as they entered the venue. The couple, who are parents to baby daughter North, were later pictured holding hands.
Kim's outfit was in contrast to Kanye, who opted for a more casual attire, wearing a black buttoned up shirt, jeans and camel-coloured boots.
Kim was a proud fiancée though, as she watched on while Kanye took part in a discussion with several artists.
Kanye got down on one knee in October, on Kim's 33rd birthday, to propose in front of family and friends at a baseball stadium in San Francisco.
Kim also features in Kanye's latest music video for 'Bound 2', in which the couple passionately embrace while on a scenic motorbike ride!
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Watch the music video for Kanye's song 'Bound 2' below:
Check out Kim and Kanye's romance in pictures below:
Copyright: Rex Features