Justin Bieber signs his name on the dotted line in this new shot from his visit to Whitney Elementary School on Friday afternoon (December 16).

The 17-year-old musician surprised Principal Sherrie Gahn and the students of Whitney Elementary in Las Vegas earlier this year when he announced he would perform a holiday concert in December.

Justin kept his promise and performed a very special holiday concert for the students. He also presented Principal Sherri with a $100,000 check for the school and delivered $100,000 in toys from The Ellen DeGeneres Show.

The special episode will air Wednesday, January 4th! Check your local listing times to watch.