Lorde bonded with Billie Eilish over their shared experience of being a teenager in the spotlight.
The 24-year-old singer rose to prominence in 2013 when she released her hit single "Royals", and has now said she and 19-year-old Billie – whose fame has skyrocketed over the last few years – have "sent a few little messages" to each other to discuss growing up in the public eye.
During an interview with Annie Mac on BBC Radio 1, the radio host told Lorde: "I see so many parallels between you guys and how you kind of came into the world."
And Lorde replied: "We have sent just a few little messages back in the day when she was very young. She's so, so sweet. There's only a handful of people who understand what that's like, to be a teenager and have that level of scrutiny on your body and your brain."