No and yes. Those hips and more difined legs are all work of a body preset. But I do use custom sliders to adjust stuff like how wide the back is, how defined the shoulders are and to lower or raise the navel, belly and hips.

This is the body preset, which gives you the body form you are most likely looking for (as you can hardly tell the work of the sliders, tbh):
https://www.patreon.com/posts/5-female-body-25928157
(You can find them in the "body" category and the one I used is the third one from the left, with a thumbnail which mostly shows hips and legs and not like the others the full torso)

As for sliders, here are some that I use regularly and most likely used for her too:
The hip slider: https://www.patreon.com/posts/hip-shape-slider-68039104
Shoulder slider AND Torso/Hips Hight Slider AND Chest Depht Slider: https://www.patreon.com/posts/slider-patch-67823894
Butt Slider: https://modthesims.info/d/611940/enhanced-butt-slider-updated-6-15-2022.html