But St Hilda's Collegiate pupils got to know another side of the singer-songwriter yesterday - that of the writer and activist.
The 26-year-old is in Dunedin to sing the national anthem at the All Blacks versus Wales test at Forsyth Barr Stadium tonight, and yesterday took up an invitation to speak to senior pupils at the school.
In 2015, she created an online media site called Villainesse, and used it to launch a campaign called MyBodyMyTerms which sparked conversation about sexual violence, victim-blaming, revenge porn and consent.
Since January this year, she has had a regular newspaper column where she comments on social issues.
Her main message to pupils at St Hilda's yesterday, was for them to "be themselves and to know that who they are, is enough'', she said.
"The other message is letting them know that they can make a change, they can make a difference, they can go on to do whatever they want.
"I hope my speech challenged them to think about the world around them. I hope that it will create some conversations around the school campus. If they're thinking about some of the things that I've said, then that's a win for me.''
Principal Jackie Barron said the pupils were inspired.
"It takes a special talent to keep 250 girls absolutely spellbound and listening for an hour.
"We invited her because we read some of the material she was writing, and were impressed with the way she encourages young women to be themselves, to be proud of who they are, to not buy into all the images that are coming at them through the media, and to really encourage young women to stand up for what they believe in. I think that's a fabulous message for young women today.''
