Nice but fake, she had a mandibular bone inserted implant in the whole jawline. Pick a photo of her really young, she had a round face, she had already a jawline but not that proeminent.
Yes, there are differences from her younger, rounder face this is sure.
I'm not sure though, if it is due to implants, or bone growth (that could have been reinforced by hormonal treatment + lots of young pictures were taken when her growth was unfinished).
It doesn't' look like implants. I would be quite impressed if she deliberately chose to make her jaw squarer trough implants.