The 20-year-old contestant received the fewest votes after she tripped and fell while singing Led Zeppelin's 'What Is and What Should Never Be' as her father, playing on guitar, watched helplessly on stage.
However the Chicago beauty remained upbeat and vowed America won't be seeing the last of her.
She said: "This is the biggest platform anybody can ask for, and I rocked it out. And I had a blast ... and this is only the beginning", before performing her final song of Sir Elton John's 'Bennie and The Jets'.
Lauren Alaina and Scotty McCreery are now left to battle it out to be crowned winner of the talent show.
Jennifer said: "You cannot buy those. Those are not for sale. Those only come out when somebody makes them come out. You gave me just goosies from head to toe."