Taylor Swift was involved in a cyber catfight after rapper Eminem's daughter asked her to leave One Direction's Harry Styles alone.
Hailie Mathers also accused the 22-year-old country singer of "whoring around" in the name of new songs, News.com.au reported.
16-year-old Mathers declared Styles to be "the love of my life" before slamming Swift in a series of tweets.
"Dear @taylorswift13, please stop whoring around with every guy you see. We all know you're only doing it so you can make another album," she tweeted.
She then referenced Swift's latest hit single 'We Are Never Ever Getting Back Together' in another tirade.
"I, am never, ever, everrrrr, listening to your music againnnn @taylorswift13. LIKE EVER," she tweeted.