Yes, this might just be the most random celebrity story we have heard in a while too!
It seems Justin Bieber thinks of himself as somewhat of a hair expert and has just the solution for anyone who might be thinning on top.
He decided to mainly focus on our dear Prince William after he seems to regard the Royal's follicles as most cause for concern.
Speaking to Rollercoaster magazine, Justin says how Prince Wills could easily have a full head of hair if he just took a bit of advice.
Justin says: "I mean, there are things to prevent that nowadays, like Propecia. I don't know why Prince William doesn't just get those things, those products. You just take Propecia and your hair grows back. Have you not got it over here?"
Related Stories: [Justin Bieber promises fans the real story]
Related Stories: [Justin Bieber tweets Boyfriend remix video]
Ok, we will admit that maybe the Prince is lacking a little on top, but really Justin!
Now Justin, we know you are young and all that but don't mess with our Prince Wills, us Brits really don't appreaciate that sort of thing!
Perhaps Justin should worry about his own haircut before he starts asking about other peoples.
We bet he won't find it so funny when his famous bouffant starts to thin.