I don’t know of a pink-flowered Magnolia grandiflora (Southern magnolia), which is the evergreen species, but I suspect you could find out if there is one from one of the nurseries recommended on the Magnolia Society International website at this link.

Hi Bonnie. Southern magnolias are wider at the base than top, more pyramidal. Typically to dictate a different shape from the one it will take on its own unpruned, they are trained (by removing some stems completely) early in their lives. Without a photo it is hard to tell what you are up against (and how tall is it)? You could email at awaytogarden @ gmail dot com.