I feel as if RIhanna, Beyonce, Gaga, Britney, and Christina are the most impactful artists THIS generation. I don't think any other girl is referenced in Media, The GP, or around the world as much as these ladies. Including their influence upon the Gay community, they have it ALL!
Gaga- She was a huge pioneer in the 2009-2012 love yourself (especially LGBT) music trend and brought back theatrics and theatrical gimmicks to pop culture which was overexposed hugely because of her (everyone was trying to top her) and now she is hugely responsible for the backfire and current state of pop music