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Rihanna

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Looks like some people have a problem with Ariana Grande.

The 20-year-old singer took to the stage at the iHeartRadio Music Awards in L.A. Thursday, where she kicked things off by singing "The Way" before launching into her current single, "Problem." During Grande's set, however, a few famous audience members appeared disinterested in her performance.

The camera first panned to Rihanna, who appeared expressionless. When Grande began to dance, the camera once again showed the "Pour It Up" singer—except this time, she cackled while drinking wine.

Luke Bryan, Blake Shelton

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Rihanna's reaction paled in comparison to Luke Bryan and Blake Shelton's unimpressed expressions. Bryan later joked about his expression, tweeting, "Wow me concentrating doesn't look good." The "That's My Kind of Night" singer even changed his Twitter header to showcase the candid moment.

Needless to say, their reactions went viral on Twitter.

Here's what other people had to say:

Grande is having the last laugh, however. "Problem (feat. Iggy Azalea)" reached No. 1 on the U.S. iTunes song chart in less than 40 minutes, breaking the record previously held by Taylor Swift 's "We Are Never Ever Getting Back Together," released in 2012.