A stoush has reportedly broken out between Lorde and Lana Del Rey over allegations the Kiwi singer ripped off two of the American star's songs.
The Sun in the UK reports Del Rey accused Lorde of using the melody from two of her songs - 'Wild At Heart' and 'Hope Is A Dangerous Thing For A Woman Like Me To Have' - in her hit 'Stoned at the Nail Salon'.
An unnamed source told The Sun a feud between the two stars has been "bubbling for a while now".
"A lot of Lana's fans had flagged one of Lorde's new songs 'Stoned At the Nail Salon' online saying the melody mimicked two of her tracks - 'Wild At Heart' and 'Hope Is A Dangerous Thing For A Woman Like Me To Have'," the source told The Sun.
"Lana's team agreed and after an expert got involved and some discussions were thrashed out between everyone involved, Lorde's people came back and offered Lana a percentage of the publishing rights to the song."
However Del Rey apparently doesn't want royalties from the Royals singer, she just wants Lorde to publicly acknowledge where the inspiration for her track came from.
Neither star has commented yet on the reported feud - Del Ray quit social media earlier this month - but the insider told The Sun their management are keen for it not to go any further.
"It means the only last course of action would be to sue - but everyone is very keen to avoid that if at all possible and hopes there can be an amicable resolution instead."