In reply to XYZ.

Rihanna is not a good example and i'll explain why. If nothing else Rihanna has a distinctive voice and has done for all the years she has been around apart from when that group Cover Drive were around.

Rihanna and her team literally took a look and made it mainstream, a look that she doesn't even wear anymore but people are still following. Im not fan of Rihanna but even i can see the impact and these girls are no Rihanna, they are like i said all carbon copies of themselves and the girls you see on those misguided and boo.com adverts.
I doubt anyone will care if they evolve because no one will remember them because they have no individuality