Lovato won the award for Favorite Celebrity Judge thanks to her first season as a mentor and judge on "X Factor USA."
As seen last Fall, Lovato mentored contestants like Paige Thomas and CeCe Frey for much of the competition. She also judged other contestants like season two winner Tate Stevens and final three group Fifth Harmony.
"X Factor USA," the competition itself, won the Favorite Competition TV Show award.
Hosted by Kaley Cuoco, the People's Choice Awards aired from Nokia L.A. Live in Los Angeles. Alicia Keys, Jason Aldean and Christina Aguilera were among those that performed. Rihanna, Katy Perry, Jennifer Aniston, Maroon 5, Chris Colfer, Taylor Swift and Adam Sandler were among those who won awards for their work in music, television and movies.