I was sorting some of my collections to seperate in my favorites and archive other ones,
when I stumbled over some effect I wasn't aware of.
In several vids she did her typical leaning over pose some in standing and some in kneeling position and than jiggle her upper body,
so her breasts swing back and forth.
In some vids there were clear wrinkles on the sideboobs visible while she was jiggling and in other vids these didn't appear.
Could it be that she had some draining for some time?
I am not aware from when these vids where, but if she had a draining, may these be after her preg and in recent vids she might be back to her pre-preg size or even gone bigger 
Sorry for having no pics, cause I am not sure if screenshots of this vids may allowed or not.
I addressed this a few years back, well before her pregnancy, but with a different conclusion. In certain OF videos, we do see that wrinkling, especially the lateral right boob, however in later videos, doing the exact same thing, the wrinkling is not present. I never assumed this was caused by draining, but the result of relaxation of the skin after some time since the last fill; skin doesn't stay taut forever, it stretches and relaxes. And the right sideboob is the site of the irregularity of shape that I have theorized as likely secondary to a displacement (shifting forward) of her internal bra shortly after surgery, but could not be detected until her implants were sufficiently filled to make it obvious. This also explains why the medial braided suture is projecting on her chest when it should be flat against her ribs like the left.
My conclusion is this can occur with certain activates where the breast is not hanging normally, thereby transferring the stress and allowing the now unstressed skin to show how much it has been stretched. We see this with dangling and when her breast is resting on something, usually when she is on her hands and knees. As I said, in subsequent videos, released well after such observations, the wrinkling is absent, which I have to assume as evidence that she had another fill, once again, pulling her skin tautly. While her internal bra negates the need of external support and assures her that her boobs will never hang lower than they currently are, the skin will naturally relax. One of the things that should be enormously evident is how the crest of her boobs has gotten higher and higher over the years of continued filling; she once had to lift her boobs to create the same higher crest appearance that she has today with the same posture. Her boob crest to chin distance never changes, but her posture can certainly create a different look, which is why she bends slightly at the waist, hence lowering her boobs, to reach so many things.