Personally I still feel its Madonna. I know you probably are thinking of britany, or one of the younger girls. Yet the sheer audacity and ability to reform her image makes madonna stand out even today amongst these girls half her age.
With so many talented women out there it's hard to pick just one. So I am going with ......
The ladies of "American Idol"
Kelly Clarkson continues to amaze and crank out Top 40 hits with every album she pumps out
Carrie Underwood is so hot she sizzles. Grammys, CMAs...all she needs now is an Oscar
Speaking of Oscars..... Jennifer Hudson now is not only singing but acting and getting Academy Awards for it. I recently saw "Dream Girls" and she and Beyonce Knowles (another of my personal favs) were amazing in it.
Now bring on Jordin Sparks and Katharine McPhee and each is doing well.
The only failure (if you can call it a failure) so far as I can tell outta the alumni of "Idol" is Fantasia...scary cause she in my opinion has the best voice of them all and talent to back it up...she's like Ruben Studdard..amazing voice but no realm to play in.