We are pleased to announce that Sarah will be a celebrity guest performer on "America's Got Talent's" finale episode!
For U.S. viewers, this will be broadcast on NBC Sept 15 at 8pm Eastern time. We expect that the full episode will be made available online at http://www.nbc.com/americas-got-talent/ so fans in other countries can catch the excitement!
Please check local listings for updated information as we do not have control over on-air broadcasts.