Kourtney Kardashian looks solemn as she steps out with her children... as it's claimed the star feels 'sick to her stomach' at the thought of taking back Scott Disick

She's soldiering on while in the midst of a split from her boyfriend of nine years Scott Disick.

But Kourtney Kardashian cut a notably solemn figure as she stepped out in Los Angeles with two of her three children on Thursday.

The 36-year-old reality TV star failed to raise a smile as she took her son Mason, five and seven-month-old son Reign out in the sunshine.

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Moving on: Kourtney Kardashian looked sombre as she emerged in Los Angeles with her eldest child, five-year-old son Mason, by her side on Thursday, amid her split from Scott Disick

Moving on: Kourtney Kardashian looked sombre as she emerged in Los Angeles with her eldest child, five-year-old son Mason, by her side on Thursday, amid her split from Scott Disick

Not seemingly present on the little excursion was Kourtney and Scott's daughter Penelope, three.

The Keeping Up With The Kardashians star still managed to look stylish in her casual garb, though, sporting a pair of pale blue and white striped skinny jeans and a loose-fitting denim shirt.

She finished her off-duty look with a pair of lace-up trainers, with her raven tresses swept back from her pretty face in a sleek utilitarian ponytail.

Her appearance comes as it has been reported that she feels 'sick to her stomach' at the thought of taking back 32-year-old Scott - the father of her three children.

Adorable! The 36-year-old carried her seven-month-old baby son Reign in her arms as she went about her day, while rocking a stylish yet casual denim ensemble

Adorable! The 36-year-old carried her seven-month-old baby son Reign in her arms as she went about her day, while rocking a stylish yet casual denim ensemble

Speaking to People about how fed up she is with his relentless party hard lifestyle, a source explained: 'Kourtney is so upset with Scott right now that the thought of taking him back makes her sick to her stomach,' 

'He crossed the line for the last time, and there's no turning back.'

The insider added: 'Kourtney is devastated, but more angry than hurt. She is seriously turned off just by the thought of him.'

Kourtney kicked Scott, with whom she had been in a relationship for nine years, to the kerb last week amid reports she had tired of his partying ways.

No going back: New reports claim the reality TV star feels 'sick to her stomach' at the thought of getting back together with Scott, her partner of nine years and the father of her three children

No going back: New reports claim the reality TV star feels 'sick to her stomach' at the thought of getting back together with Scott, her partner of nine years and the father of her three children

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It's also thought that the split was down to pictures emerging of her partner looking very cosy with his reported ex-girlfriend Chloe Bartoli, a stylist, in Monte Carlo, France.

While Lord Disick, as he likes to call himself, was sunning himself in Europe and partying with pals, Kourtney was back in California looking after their brood.

On Thursday last week, he moved out of the family home in Calabasas. 

The close-knit reality TV family are rallying around Kourtney in her difficult time, with her mother Kris Jenner, 59, reportedly urging her not to take Scott back.

Even Kanye West - Kim Kardashian's husband - is upset over Scott's actions, telling the New York native to 'man up and go to rehab,' according to Us Weekly.

It's over: Two weeks ago, Kourtney ended her long-term romance with Scott, 32, after his partying ways - and apparent flirtation with an ex-girlfriend - became too much

It's over: Two weeks ago, Kourtney ended her long-term romance with Scott, 32, after his partying ways - and apparent flirtation with an ex-girlfriend - became too much

'Kourtney's family [including brother-in-law Kanye West] feels she deserves so much better than Scott's crappy behavior.' 

The insider added: 'Since the split announcement, she has spent a lot of time with Khloé and Kim. They are helping her daily with whatever she needs...Though things are difficult now, everyone knows she'll be fine.'

Kardashian is said to be more angry and disappointed than sad: 'She has been let down by Scott many times. But this time, she's done.'

On Wednesday, Kourtney put on a brave face as she joined her family at the ESPY Awards to honour her step-father Caitlyn Jenner, as she picked up the Arthur Ashe Courage Award following her gender transition.

In happier times: Kourtney and Scott had been an item for nine years, but members of the Kardashian family are thought to be urging her not to take him back

In happier times: Kourtney and Scott had been an item for nine years, but members of the Kardashian family are thought to be urging her not to take him back

Although she didn't walk the red carpet, she did appear in several fun group family photos with her siblings, half-siblings and in-laws backstage at the landmark event. 

Meanwhile, as Kourtney stepped out with her children on Thursday, father-of-three Scott certainly didn't seem too cut up about the end of their romance as a bevy of scantily clad beauties were spotted at his Beverly Hills bachelor pad.

Blondes in heels and denim hotpants were joined by a brunette with a backless lace top and another dark-haired mystery woman wearing just a robe.

While there was no sign of Scott, photographers said the women were greeted by one of his friends and taken inside.

Brave face: Kourtney posed alongside her family and extended family at the ESPY Awards on Wednesday, as they all grouped together to support Caitlyn Jenner as she picked up the Arthur Ashe Courage Award

Brave face: Kourtney posed alongside her family and extended family at the ESPY Awards on Wednesday, as they all grouped together to support Caitlyn Jenner as she picked up the Arthur Ashe Courage Award

Proud: Kourtney looked overjoyed as she sat with sister Kim Kardashian at the event, watching step-father Caitlyn - who recently underwent a gender transition - pick up the landmark prize

Proud: Kourtney looked overjoyed as she sat with sister Kim Kardashian at the event, watching step-father Caitlyn - who recently underwent a gender transition - pick up the landmark prize

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