Just a suggestion...
But if I'm understanding the outfit right, I don't think the big boob version would have a w shape at the top like that unless it's attached to a string that leads straight into her chest in between the breasts. There's nothing to cause the middle to go in, know what I mean? So it should be more like a u from one side of the boobs to the other side of the boobs. The one on the left is kind of cute though. XD