Wednesday night's American Idol auditions in Philly weren't impressing many until a 15-year-old from the Jersey Shore stood in front of the judges. 

Gianna Isabella of Jackson sang "House Of The Rising Sun" and nailed it.

It's not surprising though, as Gianna is the daughter of pop star Brenda K. Starr. You may recognize her '80s hit "I Still Believe."

J-Lo said her "momma would be proud" as she received a golden ticket to Hollywood.

Gianna is getting used to the fame judging by her Twitter today.


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