Justin Bieber's latest photo with baby son Jack leaves fans with one alarming question

A number of Justin Bieber's social media followers have been left concerned by the singer's latest photo with his son.

Bieber, 31, and his Rhode founder wife, Hailey, 28, welcomed their first child in August of last year, revealing they'd named a beautiful baby boy, Jack Blues.

Since then, the big-name couple have remained somewhat reluctant to share snaps of the tot, often obscuring his face when uploading family photographs online, or making sure the baby's back is turned.

That said, however, the photos that the 'Baby' hitmaker has shared of his son have come under fire for a number of different reasons.

Last month, for example, critics noticed Bieber had left his fly open for a father-son snap, and months earlier, he shared a bare-bottomed photo of Jack, sparking concern for his internet safety.

Justin Bieber shared a photo alongside Jack Blues in the car (Instagram/@lilbieber)

This week, however, critics appear to have taken aim at the Canadian musician's parenting style after he shared an Instagram upload alongside his boy in the car, with a number having their eyes immediately drawn to one specific thing.

While it's likely that the vehicle was parked, many took to the comments to question where the little boy's car seat was.

One user pointed out: "I hope that car isn't moving. Could really hurt that little guy."

Another agreed, adding: "I hope the car is not moving."

"Baby should be in a car seat," a third suggested.

Someone else wrote: "Car seat please?!!!"

Bieber isn't the first A-lister to receive such a stern warning on child safety, however, with Kourtney Kardashian also being slammed earlier this year for a similar mishap.

Back in August, the US reality star shared a photo alongside her son as they posed together during a boat ride, captioned: "Food for the soul."

Kourtney Kardashian recently came under fire for a similar thing (Instagram/@kourtneykardash)

It didn't take long, however, until one of The Kardashians star's followers wrote in the comments: "Great photo except for the fact the child has no life jacket on."

Another went on to say: "You can make those kinds of decisions for yourself. But don’t make a decision like that for your child. PLEASE."

"C'mon Kourt. You both should be wearing life jackets," a third added. "Everyone on that boat should be."

In a later post, Kourtney went on to reveal that she'd taken the comments on-board, claiming: "Update: bought a life vest that fits!"

She went on to say: "Good looking out. Honestly didn't think about some of the dangers.

"Thank you for making me aware and hopefully this helps make other mommies aware of the dangers of certain types of boating without a life vest."

Tyla has contacted representatives of Justin Bieber for comment.