Can anything be done to fix this gap in between my implants or improve my cleavage? (photos)

As many of the other PSs have mentioned, your anatomy is going to be the limiting factor. You are quite slender, so above the muscle implants are going to have a significant rippling risk. If the implants remain under the muscle, your pec attachment to the breast bone is going to limit how close together they can be. That being said, you have implants on the smaller side and you liked them initially with post-op swelling. Increasing the size of the implants with medial and superior capsulotomies (open the implant space toward the middle and upper portion, but not make any extra room to the side or bottom) will improve the cleavage. I would also recommend using the same implants on both sides, it is pretty obvious in the picture that the left breast has the larger implant. Best of luck!

Thank you for your question and for the photos which really help to show where you are at now and what you are looking for. I don't think you mentioned how far you are out from your surgery.  If you are still within the first three months, then displacement exercises (breast massage) may help to decrease the gap between your breasts.  In addition, assuming the implants are below the muscle, more time should allow the pectoralis muscle to relax and the cleavage to improve. The skin will relax as well as time passes. However, if time and breast massage don't help, there are still things that can be done to achieve your desired result.  However, they will probably require additional surgery.  You could switch to larger implants as well as undergoing some additional dissection along the medial aspect of the implant pockets.  By this I mean along the sternum.  Of course, over dissecting this area could lead to complications such as rippling or even symmastia (Uniboob).  Moving the implants to a location above the muscle would be a consideration as well, although I rarely use that technique.I would suggest you discuss your concerns with your plastic surgeon.  Show him or her what you were hoping to achieve and get his or her feedback.  If necessary, consider a consultation with another board certified PS in your area to get a fresh perspective.  Best of luck. 

Thank you for your question.  I am sorry you are not happy with your results.  First, speak to your surgeon, there may be some exercises and support garments that may help to better position your implants.  Also, a period of just waiting may be a consideration to allow the implants to settle.  In regards to surgical interventions to improve your cleavage, there are several options, which may include fat grafting to the cleavage area or exchanging the implants and creating a new pocket.  In some cases, it may not be realistic or safe to modify the medial portion of the breast.  Ultimately, the implant size is dictated by your breast anatomy.I hope this helps.Good Evening,