Breast revision to fix gap? (Photo)

Even with larger implants, you will still have and gap because that is your anatomy. I do not suggest going larger because they may be too large and heavy for your frame and tissue. You could have the lateral pockets tightened some which will help.

Dear brodieodie,
many women seek improved cleavage. Narrowing the cleavage plane can be done very carefully by a skilled surgeon. Moving the implants too far medially can result in synmastia or unaboob which is very difficult to correct. That being said, the right amount of pocket dissection and implant selection can create excellent cleavage. If you are considering surgery, I would suggest you consult a board-certified plastic surgeon. Only after a thorough examination, you will get more information and recommendations.
Daniel Barrett, MDCertified, American Board of Plastic SurgeryMember, American Society of Plastic SurgeryMember, American Society of Aesthetic Plastic Surgery

It appears you have pectus excavatum with a concave sternal region. You would benefit from fat transfers. Large implants may not be the solution and may result in symmastia.

Best Wishes,

Gary Horndeski, M.D.