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Kevin Mazur/Getty Images for Clear Channel
Leg Pop
Ariana Grande performs her songs "The Way" and "Problem" during the 2014 iHeartRadio Music Awards.
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Larry Busacca/NBC/NBCU Photo Bank
Work, Work, work, work, work
Rihanna rocks a lace outfit and blue lipstick as she stands next to Grande. RiRi won four awards that night, which was the most of any artist.
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Mark Davis/NBC/NBCU Photo Bank
All Smiles
The "7 Rings" singer smiles in a black sequin dress during her performance.
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Kevin Winter/Getty Images for Clear Channel
Sing with me
Grande belts out her tune while her back-up dancers surround her.
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Kevin Winter/Getty Images for Clear Channel
Strut your stuff
Ari turns the stage into her own catwalk during her performance at the 2014 iHeartRadio Music Awards.
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Mark Davis/NBC/NBCU Photo Bank
All My Thanks
Grande smiles as she accepts the iHeartRadio Young Influencer Award.
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Kevin Winter/Getty Images for Clear Channel
Why Not pose for a photo?
Grande poses with Hilary Duff, who presented her with the iHeartRadio Young Influencer Award.