Rihanna says powerful women are dominating pop

Rihanna believes that powerful women are dominating the pop world.

The "S&M" singer recently reeled off a list of stars she feels are having the biggest impact.

"It's me, Gaga, Katy Perry, Beyoncé... who else? Ke$ha for sure," she said.

"Women are definitely dominating music right now, and that's because we are competitive beings.

"I feel like music hasn't been this exciting in a while." 

Do you think Rihanna's right? What about little Justin Bieber?