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Girl on Top, Smallville, Allison Mack, Yvonne Strahovski, Chuck

CW; NBC Photo: Mitchell Haaseth

This is it, TV fans! The final showdown of Girl on Top has arrived, and it's a face-off between two cult heroines: Clark Kent's Girl Friday Chloe Sullivan (Allison Mack) from the long-running series Smallville versus spy babe Sarah Walker (Yvonne Strahovski) from beloved action-comedy Chuck.

So which lady is the most compelling and kickass character? Only your votes can decide!

Who do you think will win? Cast your vote above and then speculate in the comments below.

Voting closes and the winner will be decided on Wednesday, Jan. 13, so get clicking!

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