As you can see by my avatar, I'm a huge Manuela fan. I am not judging her, but it's pretty obvious that the
subject is true if you've been paying attention. I think my buddy Spoon will confirm this for you as well.
She used to look like a full C-cup. Now she practically disappears when she turns sideways.
If it's her choice... good for her. I just hope it wasn't a medical issue.