Justin Bieber shares cute photo with son but fans are looking at something else entirely after spotting 'weird' detail

Justin Bieber inadvertently gave his Instagram followers more visuals than they bargained for this week, whilst attempting to share a sweet family snap with his son.

Taking to Instagram yesterday (14 Aug), the 'DAISIES' singer could be seen kicking back and soaking up some sun with his 12-month-old baby boy, Jack Blues - who celebrates his 1st birthday next weekend.

For those in need of a reminder, 31-year-old Bieber shares the adorable tot with his Rhode beauty boss and social media influencer wife, Hailey, 28.

The big-name couple tied the knot in a New York courthouse back in 2018 after several years of dating on-off, before arranging a formal ceremony in South Carolina's Somerset Chapel months later.

Despite going on to announce the birth of their son in August, the Biebers have resisted sharing snaps of the youngster's face online in a bid to protect his privacy.

Bieber shares Jack Blues with wife Hailey (Instagram/haileybieber)

By the sounds of things, however, Jack's chart-topping father should have applied the same approach to his own social media profile this week, with viewers noticing an arguably NSFW detail in his latest upload.

In the father-son photo, Bieber had paired a hot pink hoodie with a pair of grey-wash baggy jeans, seemingly failing to notice that his fly was hanging entirely open for the world to see.

Rushing to the comments, fans were quick to point out the controversial detail.

"Bieber you forgot to button your pants," one wrote.

Another jibed: "So the person who took this pic couldn’t zip his fly up?"

"Why are your pants never buttoned?" asked a third.

Bieber had seemingly left his flies open for the family photo (Instagram/@lilbieber)

Another gave the musician a serious telling off, adding: "Honestly button your pants and act and conduct yourself like a father. You are setting an example for him everyday."

A fifth hit out: "Why are his pants open? That’s just weird to do on purpose."

This is far from the first time that the 'One Less Lonely Girl' star has been questioned over the content he shares online - especially when it comes to his infant son.

On several occasions, Bieber has been called out for sharing images of the child's bare bottom, with critics accusing the star of failing to consider Jack's safety, as well as his lack of consent.

"What is wrong with you !!!??? Protect your kid !!!!!" one critic hit out in the comments at the time, whilst another penned: "I thought I was the only one thinking this. Crazy he’s going to exploit his child."

Bieber has come under fire previously for the images he shares of his son (Instagram/@justinbieber)

And just a matter of weeks ago, sharing another photo of the youngster with his face shielded, it wasn't the image itself that caused a stir online, but the caption.

Bieber had used a single 'middle finger' emoji in the description of his son, much to the dismay of critics.

One wrote: "What is it with the finger babe?"

Another added: "Odd caption with a photo of your baby…."