The 22-year-old singer dedicated a song to Jenner, who came out as transgender in an interview with ABC's Diane Sawyer, during a concert in New Zealand, reported Digital Spy.
Lovato dedicated her song "Warrior" to Jenner and told crowd, "I want to dedicate it to someone who became an even bigger hero last night - Bruce Jenner!"
"By the way, never ever thought I'd dedicate a song to him but he was honest and he was open with his story.
"No matter if you agree with it or not, he probably saved so many lives and educated so many people (about) transitioning into becoming a woman and being transgender and what that's all about.