If I understand the concept rightly, the little light receptors on the front of the brassiere are connected to batteries strapped to the girl's chest. The solar energy is sent to the battery for storage. The only FLAW in the whole plan involves the common practice of wearing clothing over underwear. This negates the light receptors, and the rest of the plan as well. Then again, the lingere manufacturer calls this a "concept bra". Not a well-thought-out concept, was it?
Now, let's see what kind of comments I get!