American Idol may have been duped!! Remember the girl from Florence, Italy that flew 14 hours to audition in Denver on this week's show?

Apparently she's not some random girl auditioning. Idol producers have found that "Nikki Nix" is a serial reality show contestant -- having appeared on tons of shows like Fear Factor", "Next", "Making the Band" and "Date My Mom." And that little girl voice she used to get the judges attention and possibly help her get through to Hollywood... it's totally fake. And so's the accent -- Nikki (or Nicole Palmeri, as she uses on her other shows) is actually from California.

Here's proof:

Nikki on MTV's Making The Band:

And Nikki on Fear Factor:

If your video player won't load CLICK HERE to watch 'em.