Plump me like you do!
The 29-year-old's pout looked larger, and some even saw her as Kylie Jenner.
"Ellie Gouldings lips are the new Kylie Jenner lips" one Twitter user, @jedisabrina tweeted.
Maybe she just used Kylie Jenner's lip kit?
Another Twitter user @tivnnv_ was concerned for her safety, tweeting, "What is wrong with Ellie Gouldings lips? Did she get punched before the performance? I am thoroughly confused."
The punches kept coming as @EthanFixell commented, "Please welcome: Ellie Goulding's lips. And two other people." #Grammys
Comedian Damon Wayans Jr. joined in with his thoughts.
"Ellie Goulding got her lips done right before she walked on stage. #grammys," he tweeted.
And while Ellie has yet to respond, she did tweet earlier today about excitement over the Grammys. "Unts unts unts unts That's me raving cos it's Grammy's day!" she wrote.
Before her buzzed-about performance, on the red carpet, Ellie stunned in a light pink Stella McCartney dress, Jimmy Choo shoes, and a Bvlgari clutch and jewels.