Kourtney Kardashian is a glamour goddess in a black gown as she poses on the stairs of her mansion for smoldering snaps

She certainly knows how to glam up for a night on the town.

And Kourtney Kardashian let her 82 million Instagram followers in on the knockout ensemble she wore Thursday evening.

She posted a snap this Friday of herself lounging on the stairs while decked out in a busty floral black and two cross necklaces.

'Anoche': Kourtney Kardashian let her 82 million Instagram followers in on the knockout ensemble she wore Thursday evening

'Anoche': Kourtney Kardashian let her 82 million Instagram followers in on the knockout ensemble she wore Thursday evening

Steps: Sweeping her dark hair tightly back into a bun, she wore a slick of scarlet lipstick and a pair of cross earrings

Steps: Sweeping her dark hair tightly back into a bun, she wore a slick of scarlet lipstick and a pair of cross earrings

Copy Kourtney in a bustier dress by Olivier Theyskens

Whenever any of the Jenner / Kardashian crew step out, we are all totally obsessed with their outfits. From bags to dresses and everything in between, we're all desperate to know what and who they're wearing.

The latest number that we're losing our minds over, is this bustier dress by Olivier Theyskens and can you blame us?!

The satin bustier top gives way to a sheer mesh and lace maxi skirt, that combines sexiness with a timeless sophistication that Kourtney perfects.

Paired with black strappy heels, slicked hair and a bold red lip, the eldest sibling of the clan ensured that all eyes would be on her.

Sadly, this exact piece has sold out, but click the image (right) to see more from Olivier Theyskens at Farfetch.

Alternatively, you can channel Kourtney's vibe by shopping our edit of black bustier maxi dresses below.

* PRICES MAY NOT BE AS ADVERTISED

Sweeping her dark hair tightly back into a bun, she wore a slick of scarlet lipstick and a pair of cross earrings.

'Anoche,' captioned the eldest child of reality TV matriarch Kris Jenner, using a Spanish word meaning 'last night.'

She had been glimpsed Thursday evening wearing this outfit when she emerged from the West Hollywood nightspot Delilah and was driven off.

Kourtney is back in town after she and her younger sister Kim met with Armenian President Armen Sarkissian in Yerevan on Wednesday.

Which to pick?: Kourtney uploaded an Instagram snap of herself weighing her earring options for the night, before choosing 'neither'

Which to pick?: Kourtney uploaded an Instagram snap of herself weighing her earring options for the night, before choosing 'neither'

Globetrotter: Kourtney was recently sharing Instagram updates from a family trip to Armenia, where she has roots on her late father Robert Kardashian's side

Globetrotter: Kourtney was recently sharing Instagram updates from a family trip to Armenia, where she has roots on her late father Robert Kardashian's side

So many selfies! Here she put one leg up to show off her fun boots

So many selfies! Here she put one leg up to show off her fun boots

The sisters, who have Armenian roots on their late father's side, went to dinner at the President's Residence on Baghramyan Avenue. 

Kim also met up with Nikol Pashinyan, who as prime minister is the country's topmost politician, but Kourtney was not present for that rendezvous.

The sisters and Kourtney's two elder children also laid flowers at the Memorial Complex honoring the 1.5 million victims of the Armenian Genocide. 

Kourtney shares three children - Mason, nine, Penelope, seven, and Reign, four - with her dashing ex Scott Disick, 36.

Warm welcome: While in the capital Yerevan, Kourtney and her sister Kim dined with Armenian President Armen Sarkissian at his official residence on Baghramyan Avenue

Warm welcome: While in the capital Yerevan, Kourtney and her sister Kim dined with Armenian President Armen Sarkissian at his official residence on Baghramyan Avenue

In a recent interview with E! News, she shared that she has changed her attitude to parenting and now wants her children to see her on the job.

'It's interesting because I used to, as a working mom, really try to separate work from my mom time. I recently thought it's a great thing for my kids to be able to see me in working mode,' said Kourtney, who launched her lifestyle brand Poosh this April.

'Even at our Poosh event, I had [Penelope] come. She really wanted to spend the day with me and I thought: "You know what, let her see her mom in action."'

Family matters: Kourtney shares three children - Mason, nine, Penelope, seven, and Reign, four - with her dashing ex Scott Disick, 36

Family matters: Kourtney shares three children - Mason, nine, Penelope, seven, and Reign, four - with her dashing ex Scott Disick, 36

Kourtney Kardashian wears black gown in Instagram photo

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