Considering every female star who has been very successful in the past 3 years has been mentioned and doesn't fit the description, this thread is just as irrelevant as the artist it's referring to.
And no, it isn't Fergie either.
edit: see the KC mention, but a sex slave? Hardly.
So we've established that this hatred filled post is not about...
Christina Aguilera
Britney Spears (?)
Rihanna
Beyonce
Lady GaGa
Ke$ha
It's Kelly Clarkson. She's the only other artist I can think of that sort of fits the description. She has two #1s, but she is losing star power (unfortunately), and her label uses her a musical slave. On that note, it's not her fault, it's her label. She wants to do more albums like Thankful and My December, but her label pressures her into making Breakaway and All I Ever Wanted type albums.