(After her breast reduction, I think)
Did she, perhaps, have an enlargement done and the later had it reversed? I reviewed several shots of her from various movies where she was seated or standing in a more or less natural way and it seems that in those shots where her boobs were larger, they had the overall roundness and shape of 'store bought' breasts.
Nope. Was a big deal at the time. Had very large boobs, reduced them 'to get more serious roles' . Likely bullshit, she's dealt with eating disorders her whole life, that's likely why she did it, to get tinier.