The 'Warrior' singer wiped away tears while singing the poignant song about sexual assault.
Kesha has once again delivered a poignant performance despite her on-going public struggles.
The 29-year-old singer attended The Humane Society of The United States' Los Angeles benefit and gala fundraiser, "To The Rescue: Saving Animal Lives," at Paramount Studios on Saturday, debuting a new look as she put on a powerful show.
WATCH: Kesha Thanks Lady Gaga for Powerful Oscars Performance
Kesha, an international ambassador for the society, belted out an emotional cover of Lady Gaga's "Til It Happens to You." The track was written about sexual assault, which hits home for Kesha as she continues to fight an ongoing legal battle with music producer Dr. Luke, who she claims raped and drugged her over a decade ago.
"I want to dedicate this song to every man, woman, child [and] animal that has ever been abused," the teary-eyed pop star said as the night's honoree, Diane Warren, started playing the song on the piano.
While Kesha sang, photos and videos of caged and abused animals appeared on the screen at the back of the stage. The performance received a well-deserved standing ovation, as well as approval from Gaga herself.
"Killed it @KeshaRose," the 30-year-old singer tweeted. "I could feel your pain. Girl these boys won't be in charge forever. The wisdom of women is rising. Let's get louder."
WATCH: Lady Gaga Kisses Kesha's Cheek in Sweet Video, Continues to Show Support
Warren, who co-wrote "Til It Happens to You" for the 2015 The Hunting Ground documentary with Gaga, was later presented with the Humanitarian of the Year Award by Zendaya for her "lifelong dedication to farm animal welfare."
Dressed in a pink Azzi & Osta gown, Kesha was nearly unrecognizable at the event, as she traded in her rainbow-hued Coachella hair for soft, rose gold-colored tresses. The most surprising part of her look, though? Those bangs!
The star-studded event was hosted by DJ and musician Moby and included additional performances by Steven Tyler and Leona Lewis. Other guests in attendance included Kate Mara, Jhene Aiko, Riley Keough, Nikki Reed, Ian Somerhalder and The Veronicas.
WATCH: Kesha Vs. Dr. Luke: Everything You Need To Know About the Legal Drama
Following the event, Kesha penned a lengthy letter on Instagram, thanking the Humane Society for their hard work.
"Upmost respect and thanks to the@humanesociety for letting me share a beautiful evening," she wrote. "Being the first international ambassador for you tops my list of achievements in this life time. helping me learn about animals rights, and then giving me the resources to be hands on in making positive change is literally where I find my peace and spiritual center. so thank you for all you do."
She ended the post with a lovely shout-out to Mother Monster, writing, "and lastly. THANK GOD for@ladygaga ❤️ Till it happens to you ( written by the f**king genius @warren_diane + gaga) is such a vulnerable display of courage and hope. thank you both so much for bringing that message to the world in the form of such a beautiful song. it was an honor to perform it last night. we are so lucky to have you both."
"With enough guts, strength and truth, WE CAN change the system," she concluded. "When women empower each other instead of tear each other down, we can fucking change the world. the truth can't be stopped. love u girls."
NEWS: Kesha Shares 'True Colors' Video Teaser
Kesha's latest performance comes three weeks after she surprised guests at the Coachella Valley Music and Arts Festival in Indio, California. As ET previously reported, she joined Zedd on stage to sing "True Colors," the title track from his second studio album.
To hear more on that performance, watch the video below.