no. you have to lose weight overall. thick fingers is a sign of good fortune and wealth in asian cultures. i have chubby fingers as well and even when im a size 2 they seem to be chubby.
There are hand exercises you can do. Try a soft rubber ball and squeeze it. Start out moderately and go slowly. When you feel pain the next day you are making gains. They also have various handgrip equipment available for hands.
Try the Lil Jack workout http://www.youtube.com/watch?v=TKCGe2Ezr��
No,tennis player use one arm a lot more than the other,is that arm skinny and the other fat?NO.