But the VMAs are also a pretty good representative for what's hot in popular culture, music wise.
Did Britney really win 3 VMAs in 2008 because "Piece of Me" was a masterpiece? No, she won because she made one of the best comebacks in recent music history and MTV felt she deserved to be awarded (no shade to Britney).
I think the defining moment I'm talking about is when everything comes together: musical output, popularity, and visibility.
The closest Rihanna has come to that is with GGGB era. I think she's capable of a defining moment as well as Beyoncé
