Well, quite simple... The tons of steroids required for her physique are starting to take a toll. That's the easiest explanation that comes to mind in such cases
She is getting back to crazy shape now. I can't say she losing muscle, I mean she does, but when she is in off-season form and she is getting back in shape too.
Bought a lot of her content, can confirm that she does fully nude flexing and other explicit content in some very fun shape, so not gonna worry about her losing a lot of muscles.
p/s she does use a lot of filters, that's why some photos look a bit strange.