Natural breasts very close together - how to separate?

I would resubmit your question with a photograph, as it is difficult to give good advice without being able to see the condition.  Even better, schedule a consultation with a board certified plastic surgeon.Best of luck!
Dr. SubbioBoard-Certified Plastic SurgeonNewtown Square/Philadelphia, PA

My colleagues have correctly pointed out that specific advice can only be provided during an in-person consultation with an experienced board certified or board eligible plastic surgeon whose aesthetics seem to align with those of your own. In theory, a mastopexy will tighten your breasts and potentially widen the distance between them. A properly selected breast implant with a relatively narrow base diameter and more projection may play a role. Best of luck to you.