For over a decade, Hailey Bieber and her close friends Kendall and Kylie Jenner have supported each other during life’s biggest milestones – from launching successful business ventures to celebrating the birth of Hailey’s son Jack with husband Justin Bieber.

Now, the 28-year-old Rhode Skin founder is relying on the support of her famous pals more than ever as she continues to navigate challenges in her relationship with the 31-year-old pop star.

‘Kylie and Kendall know Justin better than anyone, and they also know how unhappy Hailey is at the moment,’ an insider exclusively told DailyMail.com. ‘Her fairytale is not the fairytale that she envisioned.’

The trio was spotted at celeb hotspot Sushi Park in West Hollywood on April 4 – sans Justin.

The outing caught the attention of eagle-eyed fans who questioned why Hailey kept her left hand, where her jaw-dropping oval diamond engagement ring usually sits, hidden in her pocket. 

While it’s unclear exactly what went down during Hailey’s late-night dinner outing with Kendall and Kylie, a separate source tells DailyMail.com that the sisters are ‘desperately’ attempting to stage an intervention for the Baby singer.

Hailey Bieber is relying on the support of her famous pals more than ever as she continues to navigate challenges with her husband Justin Bieber, sources claim

The Jenner sisters are ‘desperately trying to persuade Hailey to get a group of their close friends together to do an intervention on Justin,’ one source told DailyMail.com

Justin, 31, has become increasingly unrecognizable in recent months, fueling growing concerns with videos of himself smoking weed and acting erratically on impromptu live streams 

‘Kendall’s been desperately trying to persuade Hailey to get a group of their close friends together to do an intervention for Justin,’ they said. ‘She wants to help their marriage.’

Still, the insider noted that Kendall’s efforts to save the couple have been largely  unsuccessful, as ‘Hailey says Justin only has minor issues now that he’s in the process of sorting himself out.’ 

In recent months, the Never Say Never singer has sparked concerns for his health amid a flurry of bizarre social media posts and disheveled public appearances. 

Last week, he appeared hollow eyed and gaunt as he played some raw demos for fans during an Instagram livestream.

Fans pointed out that Hailey even unfollowed Justin shortly after the livestream, but she later debunked the rumors and claimed it was a ‘glitch’ in the app.

This wasn’t the first time the reality TV stars have been pictured with Hailey amid growing speculation surrounding her relationship with Justin. 

The singer (pictured in January) has been sparking concern with a series of outings looking erratic, admitting he’s been struggling with his mental health, and rumors over the state of his marriage with Hailey

He recently shared a video of himself smoking what appeared to be a joint 

The model reportedly leaned on Kendall for support during a dinner at Il Segreto Ristorante in Bel Air on Saturday, March 29.

But Hailey and Kendall raised eyebrows when they were seen leaving the restaurant together just minutes before Justin reportedly arrived, only to dine alone. 

Later that evening, he was spotted heading to a movie theater solo. 

As a public show of unity, Justin and Hailey were photographed this week walking arm-in-arm to a restaurant for a date night in Los Angeles. 

The singer also publicly affirmed his love for Hailey last month with a series of tributes shared to Instagram, with songs about love added to the posts.

While the source admitted that Kendall and Kylie aren’t exactly sure what happens behind closed doors, the sisters know ‘he is going through something’ and felt it was important ‘to get Hailey out of the house and sit her down to make sure she is okay.’

DailyMail.com has contacted representatives for Kendall and Kylie Jenner for comment.