- Perry has been an ambassador since 2013
- She said Clinton helped her find her voice
The former Democratic presidential candidate showed up at the UNICEF Snowflake Ball in New York to present Perry with the the Audrey Hepburn Humanitarian Award.
"I've gotten to spend time with her and I know how deeply she cares about making our world a better place," said Clinton, who received a standing ovation. "She is serious about understanding the complex problems we face and pulling people together to solve them."
"We need champions like Katy now more than ever, her passion, her energy and, yes, her voice, louder than a lion," Clinton added.
Perry, who has been a UNICEF ambassador since 2013, was surprised and jokingly asked for tissue to wipe her tears.
"I've always had a voice, a singing voice, but I've never had a voice like I've had before," Perry said. "Hillary has lit that voice inside of me, and that light will never go out, it will continue to get brighter and brighter and brighter. Thank you Hillary."
Perry attended the event with her parents and boyfriend, actor Orlando Bloom, helping to put to rest recent rumors that the pair had split.