Taylor Swift Drops F-Bomb While Harry Styles Presents an MTV VMA Award

The 23-year-old pop star -- known for writing those infamous breakup tunes -- dissed One Direction's Harry Styles, this time at the 2013 MTV Video Music Awards at the Barclays Center in Brooklyn, N.Y.

When Styles and his One Direction bandmates presented an award onstage, Swift  sitting with BFF Selena Gomez was watching One Direction from the audience when she appeared to mouth the words "Shut the f--k up." in the audience. 

Swift previously mocked Styles by speaking in a British accent during her "We Are Never Ever Getting Back Together" performance at the Grammy Awards in February 2013. The couple called it quits during early January after a couple months of dating.