Only Girl In The World Rihanna
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Biggest Celebrity Rivals
They're two of the biggest exhibitionists in pop, but who's got the edge? When Lady Gaga burst onto the music scene back in 2008, it's fair to say, Queen Madge wasn't best pleased. From her style to her stunts, Madonna finally had some worthy competition in the show-off stakes. Well Madge, imitation is the sincerest form of flattery!