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Madonna vs. Lady Gaga
Pussycat Dolls vs. Spice Girls
Britney Spears vs. Christina Aguilera
Kesha vs. P!nk
Maroon 5 vs. The Black Eyes Peas
Taylor Swift vs. Ariana Grande
Madonna vs. Janet Jackson
Whitney Houston vs. Mariah Carey
Gwen Stefani vs. Fergie
for research.. Bridget Mendler vs. The Ex Acts 
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JT vs. Bruno Mars
