Iggy & J.Lo Scare the Crap Out of ABC's AMAs with Their Booty

Iggy Azalea and Jennifer Lopez have created excruciating stress on several ABC staffers -- the censors who will have their hot little fingers on the button during Sunday's American Music Awards.

Our spies tell us ... Iggy and J.Lo will perform "Booty" ... and network honchos are nervous ... real nervous. The execs have set the ground rules ... no cracks, no rubbing. There will be a 3-4 second delay, but these shows have a rich history of raunchy performances slipping through ... the cracks.

It's interesting ... we're told ABC has not put the kibosh on spanking ... something fairly prominent in the music video. But that's as sexual as execs will allow.

The question ... will Iggy and/or J.Lo cross the line?