Grabbed some photos from her X and her latest Fantia post. I think it's hard to tell with her but depending on her outfit and camera angle, her boobs sometimes look big and sometimes they look normal. I agree that she looks huge in her latest post (pics 1 & 2) but I really don't believe she had implants.
Anyways, not trying to make a compelling argument but I did provide some photos so you can judge for yourself. Some of these photos here are from a few years ago. Her fantia videos also show off her boobs a bit better because she plays around with them sometimes.