A couple weeks ago, Justin did an interview with Rolla Coasta magazine (you can see the pics HERE), and he had some unwanted advice for Prince William:

“I mean, there are things to prevent [baldness] nowadays, like Propecia. I don't know why he just doesn't get those things, those products. You just take Propecia and your hair grows back. Have you not got it over here?”

Ouch!! Justin may have meant well, but there are a few things to keep in mind.

First, Prince William might be perfectly happy with his hair as it is. And the second thing is...what if he's already using those products and they just don't work for him? It could have been a sore point for the prince.

Thanks to Wambie girl Jammy F. for the news.

Source: Rolla Coster via TMZ