Chris Jackson, Getty/ Michael Buckner, Getty
Our first round grudge match features Madonna vs. Katy Perry. While the Material Girl busted down the door with her edgy music and even edgier concerts, lately Katy has been busting out seemingly infinite hits.
Who do you think should win round one of our "Most Influential Woman in Pop" March Madness bracket? Vote below ... and check back on Monday (March 4) to see the next two divas battling it out in round two.
| Madonna | |
|---|---|
| Katy Perry |

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