I like her devil fruit and she looks really nice :P
I support Robin. Well, I liked her appearance the most. Her importance in the whole plot is arguably one of the most important. I like her deviance among the SH, her dark humor. And I liked the theory she's based on Mia Wallace (Pulp Fiction) XD.
I Nominate Tashigi
Not only has she shown her desire to grow and to become a worthy Marine, but she has "learned" from Smoker "Real Justice".
Based on her actions as a marine Tashigi represents (IMO) what constitutes the best qualities of the Marines...
So even though I'd rather find Hancock or Robin sleeping in my bed, Tashigi is my vote based on Guts, Character and Skill.
As said earlier, her role in the story is of great importance. Plus, even after her back story, I still find her a mystery...who's trying to reveal the greatest mysteries. :P
Robin, very strong and beautifull.
Hancock,she is strong and beautiful,and her mind is too cool!