It genuinely doesn't look like a BBL - you can usually tell by the line at the bottom of the buttocks + the way the ass moves. To me, it doesn't seem like a BBL - her ass has been more or less consistent with her weight as time has gone on, shes a lot thicker than she used to be, and we all know women tend to store fat in their hips/ass. Also, its 100% possible to have a flat belly and big thighs/ass; plus, if you actually look at natalie's body, her belly isn't *that* perfectly flat, she hasn't got intense abs or anything and her lower belly hasn't got the classic signs of liposuction.
Her ass has always been pretty large/maintained the same shape and proportions. Just my opinion tho. But I will say I think she's had some work done on her nips lmao - shes said she used to be self conscious about them, and there's something off about them, like if you look at her right nip, it def looks like a knife has been taken to it - her areolas seem stuck on. They dont stretch and move as if theyre naturally connected to the rest of the boob. I could be wrong tho
I went full on there, but nah I would bet $$ that it isn't a bbl, she's just a chick with big thighs and therefore ass. It isn't even that perfectly shaped or anything (still hella sexy tho), just big imo