Avril Lavigne and Ashlee Simpson are the pop-rock princess warriors of the aughts. Lavigne made her breakthrough in 2002 with pop-punk smashes "Complicated" and "Sk8er Boi" and her commercially successful debut LP "Let Go." Simpson broke out from under her sister Jessica Simpson's shadow in 2004, and dropped her first hit "Pieces of Me," which is featured on her chart-topping debut album "Autobiography." Which pop-rock singer of the '00s do you love the most?
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Favorite pop-rock singer of the aughts: Avril Lavigne or Ashlee Simpson?
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