Lul. I put this cosplay together in like two seconds to wear to spirit week at school. I'm not very confident with my body so, here is my Pokeball belt, or part of it anyway.
And my togepi doll!
To make the belt, I just attached a piece of string to my jeans' belt loops, and put six key-chain pokeballs clipped on over the string. Pulled it taunt and tied it.. and they stayed up pretty straight.
Just have to be careful no one pushes the button, or you hit them.. you might lose them if they fall off.