Is it better to get breast implants before or after pregnancy?

La

I have talked about having implants done with my SO. I am currently a 34B. I want to go up to a D so my body is proportionate. I have a pretty tight, fit body. Perfect, but I don't have boobs. I want them badly.

I am trying to figure out if it's better to wait until after kids or before. I only want 2 kids, maybe even just 1. I am also 32. Would it be better to wait until after kids, when I have gotten back into shape and tightened up my body or just go for it now???