She is at college, is young adult still on the teen body?

Is there a way to switch her to her mothers Pin-up shape?

I used your teen C with Lg hip for one of my Sims (I am just beginning to explore different skin and shapes) and when she became a young adult her body vanished.  I didn't install all the different Hi Res adult files because of disk space. Which ones do I need for her or a teen D with Lg hips?

Also,  I want to complement you on the Classic pin-up shape, it is my favorite Maxis alternative to mix it up for the ladies in my community.  I hope to learn how to adapt more fashions for them in the future. Thanks again from a newbie for your work.