Very VERY difficult choice to make.
I chose Sofia Vergara, mainly because she's hotter than the rest of them, plus I think she would like it.
Yes, I know that Nicole Kidman said in an ar-tickle a long time ago that she liked tickling, but she's just not as hot as Sofia Vergara.
For that matter, where is Drew Barrymore, who said she liked tickle fights.
Anyway, that's my reason for choosing Sofia Vergara.