[Doll]

They usually suggest sleeping on your back to prevent hurting your breasts, and also to prevent cutting off blood flow, which, yes, will help growth a little. Although it's impossible to say that wearing push-ups actually shaped your breasts over time, since it could also just be genetics and hormone levels. Yeah, corsets are meant to shape, but in a completely different way. They squeeze to shape, while bras are really only meant to shape during wear, without squeezing. Push up bras are meant to give cleavage, make the breasts look bigger, and help reduce the effects of gravity and prevent them from sagging as much later in life.

I'm sure there are plenty of people out there with tuberous breasts that have worn push ups all their life, too. I really don't think it's at all the same.

Also, consider the pointy-shaped bras of the 50's. They never actually made women's breasts grow to that shape, they just shaped them like that while in the bra because it was the fashion.

I've been wearing bras since starting NBE, and my breasts continue to grow on all sides. My breasts are (unfortunately) so wide that they stretch all the way to under the armpit, right where the bra wire goes. Wearing a bra forces that fat to shift closer to my center than it normally would on its own, yet it's still filling out just as far on the sides. You may find that during NBE growth, you will begin to develop in different places along the breast.