X Factor USA Heads For Top 16 Finalists, Kelly Rowland Shocked

Eight more acts will move forward in the competition, another eight will be sent home on this week's edition of "X Factor USA."

In a teaser for the conclusion of the Four Chair Challenge, both Simon Cowell and Paulina Rubio are forced to decide who should stay and who should go. In the end, Kelly Rowland is stunned by someone's decision to send a contestant home.

"X Factor USA" airs tonight and Thursday night at 8 p.m. on FOX.