I feel like that would really make her breast feel uncomfortable. It looks like it would dig into her skin. Still a neat idea though.
If it were custom made for her to wear, then it wouldn't feel so bad. It would be just like if someone were constantly cupping your boobies. (I don't think the "fingertips" are digging in to her as much as it looks.)
Well... I don' know what she does all day, but they bounce and move around as she walks. So the pointy fingertips would poke into her skin. But maybe it's some kind of rubber -ish material, that wouldn't hurt.