Debbie Gibson Thinks Justin Bieber's "Taking On Too Much Too Soon"

Sounds like someone is a little jealous!

'80s pop princess Debbie Gibson is warning Justin Bieber to slow things down because he will "lose his sanity" if he doesn't stay grounded.

Being a former teen sensation, Debbie had some pearls of wisdom for Justin:

"It's too much too soon. People have to remember even though a kid can be wise beyond their years professionally and can handle showbiz,