Robert Pattinson's new girlfriend FKA Twigs has been the target of racist abuse Credit: John Phillips/Getty Images

Robert Pattinson's new girlfriend FKA Twigs has been the target of a barrage of online racist abuse since her relationship with the former Twilight star become public  and she’s decided enough is enough.

Speaking out via her Twitter account on Sunday, September 28, the half-Jamaican, half-Spanish singer slammed the Internet trolls who have been leaving her racist messages, and proved she wouldn't be bullied.

"I am genuinely shocked and disgusted at the amount of racism that has been infecting my account the past week," the 26-year-old singer, real name Tahliah Debrett Barnett, wrote. "Racism is unacceptable in the real world and it's unacceptable online."

Pattinson, 28, and FKA Twigs started dating last month, as Us Weekly exclusively revealed. Last week, the couple went public with their romance, cuddling up together in a car and holding hands while out in Los Angeles.

Internet trolls — some apparently fans of Pattinson, some fans of his ex-girlfriend Kristen Stewart — have been leaving unpleasant racist remarks on the award-winning singer's Twitter feed ever since, suggesting the actor has made a mistake in his choice of girlfriend.

But whatever the Internet trolls say, Pattinson and FKA Twigs are happy.

"They are trying to avoid making a spectacle of their relationship, but at the same time both enjoy going out with their friends," a source told Us.

"They connect on music, which is something that Rob keeps pretty close to his heart," the source continued. "A lot of his close friends are musicians. He loves her voice, he loves her sense of style as well, how unique she is."