And she's just getting started.
Check out the five things to know about the sometimes controversial 17-year-old performer.
5. Her real name is Ella Yelich-O'Connor. As for where the moniker "Lorde" came from, the singer told Interview magazine, "When I was trying to come up with a stage name, I thought 'Lord' was super rad, but really masculine--ever since I was a little kid, I have been really into royals and aristocracy. So to make Lord more feminine, I just put an 'e' on the end! Some people think it's religious, but it's not."
4. She started writing songs at "11 or 12," she told Billboard. At 13, she was signed to Universal Music after execs heard her singing Duffy's "Warwick Avenue" on a recording from a school talent contest, according to NME.
3. She calls herself a "feminist" and has already dissed Selena Gomez and Taylor Swift because of it.
"I love pop music on a sonic level," Lorde told Rolling Stone, "but I'm a feminist and the theme of [Selena Gomez's] song ["Come & Get It"] is "when you're ready come and get it from me. I'm sick of women being portrayed this way."
2. She wrote the lyrics to "Royals" in "like half an hour," she told Billboard. After showing the written song to her producer/co-writer Joel Little, the duo made the hit song together and went on to nab New Zealand's most prestigious songwriting honor--the 2013 Silver Scroll Award-for it.
1. The success of "Royals" made her the youngest artist to top the Billboard Hot 100 since Tiffany's 1987 hit song "I Think We're Alone Now."