Justin Bieber slams Prince William’s thinning hair (Nice, Biebs)

Justin Bieber, this is not how a loyal subject behaves. Slamming Prince William, that is.

The Canadian-born Biebs, famous in part for his lush locks, stole a moment in a recent magazine interview to slam His Royal Highness Prince William for his thinning hair.

“I mean, there are things to prevent that nowadays, like Propecia,” the 18-year-old told British magazine Rolla Coaster (via the Daily Mail). “I don’t know why he doesn’t just get those things, those products.

“You just take Propecia and your hair grows back.

“Have you not got it over here?”

Remember, fans, one of these guys graduated from high school on “The Ellen DeGeneres Show.” The other one got Kate Middleton to say “I do.”

Bieber’s blurt was a choice we can only categorize as tempting fate, given that the pop star is in fact male and, well, they don’t call it male pattern baldness for nothing.

It could happen to you, Justin.

Never say never.

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