How to lose weight without losing breast?

I have a question that has been bothering me for a long time, that is, how can I lose weight and keep my breasts intact? The size of the chest includes breasts and pectoral muscles, the volume of the breast is less fat filling; fat loss is a change in the whole body, of course, will also reduce the fat in the breast; female form of beauty, the final effect is the cup rather than the bust; fat loss can make the dimension of the circle below your breasts smaller, and the pectoral muscle padding will make the breasts more upright, comprehensive look, in turn, is a rising cup, so with the exercise of pectoral muscles; try dumbbell flying bird and bench Push-ups. And! Firmness, firmness. These two are both sexier than just two large breasts. The shape and firmness of the breasts are particularly important.