Kourtney Kardashian flashes her cleavage in slinky strappy top teamed with ripped jeans as she has dinner with her mother Kris Jenner's boyfriend Corey Gamble

He's quickly become part of the family.

And Kourtney Kardashian took her mother's boyfriend Corey Gamble out to dinner at the Nice Guy in Los Angeles on Thursday night.

The 36-year-old wowed in a casual ensemble teamed with heels for the night out as she walked ahead of her 60-year-old mother's much younger other half.

Scroll down for video 

Time for eats! Kourtney Kardashian took her mother's boyfriend Corey Gamble out to dinner at the Nice Guy in Los Angeles on Thursday night

Time for eats! Kourtney Kardashian took her mother's boyfriend Corey Gamble out to dinner at the Nice Guy in Los Angeles on Thursday night

But it was as Kourtney emerged later in the evening from the popular nightspot that really won her some fashion points.

The stunning star flashed more than a hint of her perfectly-formed cleavage as she removed her jacket - worn earlier in the night - to reveal a slinky, strappy top with a low-cut neckline. 

Showing off her casual style, the oldest of the Kardashian-Jenner clan teamed her figure-hugging and well-constructed top with a pair of laid-back slashed jeans.

Smart-casual with sex appeal: Kourtney, 36, looked gorgeous in a slinky, strappy low-cut black top, teamed with slashed jeans for the evening out

Smart-casual with sex appeal: Kourtney, 36, looked gorgeous in a slinky, strappy low-cut black top

Sticking together: While 35-year-old Corey's girlfriend Kris Jenner, 60, was in Paris for Fashion Week, Kourtney kept him company

Sticking together: While 35-year-old Corey's girlfriend Kris Jenner, 60, was in Paris for Fashion Week, Kourtney kept him company

Denim diva: Showing off her casual style, the oldest of the Kardashian-Jenner clan teamed her figure-hugging and well-constructed top with a pair of laid-back slashed jeans

Denim diva: Showing off her casual style, the oldest of the Kardashian-Jenner clan teamed her figure-hugging and well-constructed top with a pair of laid-back slashed jeans

Rip up the rulebook in distressed jeans by Saint Laurent

The Kardashian sisters have klearly been swapping klothes again.

Kourtney was spotted out for dinner in a very distinctive pair of distressed jeans that we spotted Kim wearing way back in 2013! Konfusing isn't it...

But Kourtney is proving that a good pair of destroyed jeans will only get better with age. They're by Saint Laurent and we love the extreme rips and rock n roll chain embellishment. The bad news is that they're now all sold out, but since they cost a staggering $1590 that's probably good news for your bank balance. Now that's what we call designer DIY!

When teamed with a Wolford top, court heels and an embellished bomber jacket, Kourtney is the queen of ripped jeans. But don't tell Kim we said that!

If you want to get the mix of glamour and grunge just right then click through to buy a slightly more subtle pair of ripped jeans by Saint Laurent.

Or if you're feeling like saving some dough take a look at our affordable options below.

* PRICES MAY NOT BE AS ADVERTISED

The pale blue denim was cut in a slightly loose fit but still made the most of the petite reality TV star's enviably toned pins, revealing flashes of her toned skin through the edgy rips.

Her eveningwear was tied together with a pair of classic black pointed heels and a simple black satin bomber jacket.

Beauty-wise, Kourtney was as flawless as ever, her dark locks swept over to one side and her make-up as natural as possible, her skin glowing. 

Family time: The eldest of the Kardashian-Jenner clan made sure the music manager was kept occupied

Family time: The eldest of the Kardashian-Jenner clan made sure the music manager was kept occupied

Protective: Corey acted as a protective guardian to his girlfriend's daughter as they left the popular venue together

Protective: Corey acted as a protective guardian to his girlfriend's daughter as they left the popular venue together

Across the world: Kris Jenner was in Paris along with her son-in-law Kanye West, watching daughter Kendall at the Balmain A/W 16 show

Across the world: Kris Jenner was in Paris along with her son-in-law Kanye West, watching daughter Kendall at the Balmain A/W 16 show

Meanwhile, 35-year-old Corey - who is 25 years younger than his girlfriend Kris Jenner - was dressed in all black as she had a stern look on his face.

The music manager, who works with Scooter Braun and Justin Bieber, sported a gold chain and Yeezy Boosts, designed by Kris' son-in-law Kanye West, the husband of Kim Kardashian.

Kris, meanwhile, was in Paris supporting her second-youngest child Kendall Jenner, 20, rocking the runway for Balmain alongside rapper Kanye. 

Earlier that day Kourtney took to Instagram and her website kourtneykardashian.com to share an old modelling photo where she's posing with Kim and Khloe.

Arrival: Earlier in the night, they had rocked up together, Kourtney sporting a satin black bomber jacket

Arrival: Earlier in the night, they had rocked up together, Kourtney sporting a satin black bomber jacket

Distressed: The mother-of-three sported torn jeans and heels for the night out as she walked ahead of hermother's much younger other half

Distressed: The mother-of-three sported torn jeans and heels for the night out as she walked ahead of hermother's much younger other half

Flawless: Kourtney swept her hair over to one side while sporting a neutral make-up pallette

Flawless: Kourtney swept her hair over to one side while sporting a neutral make-up pallette

The image was taken by famed photographer Annie Leibovitz for the debut of their Kardashian Kollection clothing line in 2011.

'I love these throwback photos from the first season of our Kardashian Kollection photo shoot, photographed by the iconic Annie Leibovitz,' the mother-of-three wrote on her website.

'Working with my sisters to create this clothing line was so much fun and it really reflected our individual styles at the time, even down to our lingerie!'

She also shared other shots from that first campaign, one with all three in leopard print outfits.

Looking back: Kourtney Kardashian, seen here on Tuesday, shared a photo on her website from 2011 where she was modeling lingerie with her sisters Kim and Khloe

Looking back: Kourtney Kardashian, seen here on Tuesday, shared a photo on her website from 2011 where she was modeling lingerie with her sisters Kim and Khloe

Posing: 'I love these throwback photos from the first season of our Kardashian Kollection photo shoot, photographed by the iconic Annie Leibovitz,' the mother of three wrote on her website; here she is seen in portraits posted to Instagram earlier this week
Posing: 'I love these throwback photos from the first season of our Kardashian Kollection photo shoot, photographed by the iconic Annie Leibovitz,' the mother of three wrote on her website; here she is seen in portraits posted to Instagram earlier this week

Posing: 'I love these throwback photos from the first season of our Kardashian Kollection photo shoot, photographed by the iconic Annie Leibovitz,' the mother of three wrote on her website; here she is seen in portraits posted to Instagram earlier this week

In the lingerie snap, Kourtney is wearing black bra and panties with a pattern on top and cheetah print n the bottom with lace details. She is pouty with bedroom eyes and her long hair worn wavy and sexy as can be.

The ex of Scott Disick was 31-year-old at the time.

Kim is at her thinnest in a black bra and garter set with beige lace details. She too has the same bedroom eyes with her pink painted lips parted. The E! siren was 30-years-old at the time and was just starting to see basketball star Kris Humphries, who she later married and quickly divorced.

Partying with the Cohens: Kourtney with Kim, Kanye, Kris, Courteney Cox and her daughter, Corey Gamble, as well as Sacha Baron Cohen and Isla Fisher

Partying with the Cohens: Kourtney with Kim, Kanye, Kris, Courteney Cox and her daughter, Corey Gamble, as well as Sacha Baron Cohen and Isla Fisher

Khloe is caught in the middle.

The 31-year-old wife of Lamar Odom has on pink and black lingerie and black thigh highs. She looks almost angry.

The reality diva was only 26-years-old at the time.

Kourtney has been going out plenty since splitting from Scott this summer.

On Wednesday evening, however, she had a night in with Kim and mom Kris Jenner as they watched Sacha Baron Cohen's new movie at home. 

 

 

 

 

The comments below have not been moderated.

The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline.

By posting your comment you agree to our house rules.

Who is this week's top commenter? Find out now