Time to reboob.
What's surprising is that nobody here thinks this is an inherently sexist device. Don't men suffer from overeating as well? What about a jock strap that monitors them? Eating disorders are not strictly a female problem, and technology that is unisex has, at least in my experience, fared far better in the market place. How successful has Microsoft been at developing a computer "for women"? It hasn't been. It's a terrible and stupid idea; just like designing a car "for women" has been in that industry.
Attaching the device to a bra would be alright, but integrating it into it pretty much spells its doom on the market. About the only thing that's marketed to women I buy besides clothing is deodorant... because for some very strange reason, men seem to enjoy smelling like they swam through a high school chemistry lab's discarded waste.