Any way I can get my boobs to sit wider? (Photo)

I had a breast augmentation revision 2 years ago to swap out 15 year old implants with smalller ones. I also had a lift at the time. After this last surgery I noticed my cleavage is especially close together- and it has always sat close but it's closer now than ever. I was very concerned about sternum separation and tho I'm content, when I put on a bathingsuit I'm very self conscious. My question is, is there anything low-risk that can be done to get them to sit wider?