Yet rather thoughtfully, the 31-year-old toned down her outfit from the bare-all, lace festooned show stopping numbers she's been tottering around London Town in, so as not to upstage her beau.
Cheer up, Kanye: Kim Kardashian took no prisoners in this skintight black dress and barely there gold chain shoes at the Jay Z after-party
The brunette just kept it simple in a stunning black satin dress that showed off her ample cleavage, yet was quite conservative for her.
She paired it with some hip hop appropriate gold sandals and a beautiful long grey coat.
Kanye, 34 , who looked as miserable as ever, held tightly to her hand after his epic performance with Jay Z.
Love is blind: Kim looked blissed out to be with the main man of the night
And the stars come out to play: Rita Ora and Stella McCartney came out to enjoy the musical extravaganza
The reality star is in London promoting a variety of products, and was told about the ITV2 series while answering press questions.
Upon hearing about TOWIE, Kim exclaimed: 'That sounds like my kind of place!'
Iconic: Kanye and Jay Z are touring their studio album, Watch the Throne
Provocative: Kim Kardashian looked sexy in a cutaway mesh dress as attended a QuickTrim party in London but she toned it down for Kanye's big night