Robert Pattinson's Girlfriend FKA Twigs Gives a Stunning 'Tonight Show' Performance

With performances like these, it's safe to say singer FKA Twigs will soon no longer be primarily known as Robert Pattinson's girlfriend.

The buzzworthy British singer made her U.S. television debut on The Tonight Show Starring Jimmy Fallon Tuesday, where she stunned audiences thanks to a mesmerizing, sultry performance of her song "Two Weeks."

Trained as a professional dancer, the 26-year-old singer owned the stage in a gold crop top, a sexy maxi skirt and stiletto booties. Even host Jimmy Fallon seemed temporarily speechless after the performance, smiling, "Oh my goodness. I've never seen anything like that before."

PHOTOS: Wait, WHO Is Robert Pattinson Dating?

Twigs' debut album LP1 has already been well-received by critics, and she's been featured on Billboard's 14 Artists to Watch in 2014. In October, she even made Google Glass look cool in this short film she directed, highlighting her next-level dance moves.

But it hasn't all been positive for FKA Twigs since news broke in September that she's dating Pattinson, 28. She's since had to take to social media to hit back at racist remarks from fans unhappy that she's not Pattinson's ex-girlfriend Kristen Stewart.

"I am genuinely shocked and disgusted at the amount of racism that has been infecting my account the past week," she tweeted. "Racism is unacceptable in the real world and it's unacceptable online."

Though despite the haters, Pattinson and Twigs are still going strong. The two were snapped showing PDA in Toronto Sunday, looking more in love than ever.

PHOTOS: Robert Pattinson Holds Hands with GF FKA Twigs

In September, the Twilight star expressed his support for another important musician in his life -- his big sister Lizzy, who competed on The X Factor U.K.

"Her being on [The X Factor] is the most exciting thing that's happened to me in such a long time," Pattinson gushed to ET Canada. "I'm so excited about it."

Watch the sweet interview below!