Round 19:
Round 18:
Round 17:
Round 16:
Round 15:
Round 14:
Round 13:
Round 12:
Round 11:
Round 10:
Round 9:
Round 8:
Round 7:
Round 6: Lana Winters
Round 5: Sarah Walker
Round 4: Violet Harmon
Round 3: Catelyn Stark
Round 2: Sansa Stark
Round 1: Allison Cameron

Ugh, fine, Margaery or Myrcella. But I'm going with Margaery because she did not have a crush on Robb and I value that quality in Myrcella highly XD Besides, she's more fierce than Margaery. And she's a Lannister.
Anyways, I think everyone that's left SORT OF fits. I'm glad. I think the characters that should be in the top 10 are Arya, Cersei, Dany, Veronica, Asha, Talisa, Ygritte, Shae, Emily/Amanda and Emma.

Margaery than Myrcella. :)