Is J.Lo Out as an 'Idol' Judge?

It looks like the balloon floating with Jennifer Lopez as an "American Idol" judge has plummeted to the ground.

Jennifer Lopez

A source close to the negotiations told the deal has fallen through because "her demands got out of hand. FOX had just had enough." J.Lo a diva?! Can it be?!

"Idol" executives may now be looking at their earlier top picks, including Aerosmith's Steven Tyler.

FOX had no comment. A rep for Lopez did not immediately return calls for comment.