"There's very few I ever hear putting their hand up for that, but I was very humbled by it."
Although she had no plans to go see Sir Elton perform any time soon, Ardern would not rule out the possibility.
However, she did immediately rebuff questions from reporters about whether she could "feel the love tonight".
"You will not be getting a bar from me," Ardern replied.
It's not the first time Ardern has won praise from a major celebrity.
In her keynote speech at the Women in the World summit in New York City, Oprah Winfrey praised the PM's leadership after the March 15 mosque attacks.
"I've never seen such leadership," Winfrey said.
"The Prime Minister is a woman who has such courage in her convictions and has set a global standard for leadership with her response."