Ariana Grande is finally speaking out about Rihanna 's gigglefest during her iHeartRadio Music Awards performance. The Bump Show , the host asked Grande what she thought about the reports that RiRi was laughing at her while she was on stage. "I didn't see her laughing at me, but when I watched it afterwards, it looked like she was just shocked because I was doing something different," the "Problem" singer explained. Besides, Rihanna had other things to worry about that weekend.