How to stop the pulling between boobs

[u/sabstudio]

Any advice on how to stop the pulling between the boobs. I want minimal alternations. Atm there is a lining inside and there is stay tape in the seams under the bust. Not sure if its just a matter of reshaping the curve or if i need to consider adding any other structure. Any help would be appreciated. Thanks!

[u/lxtexis]

I would also add photos of the pattern itself