I'm having a strange glitch with my sim's body frame. When she bends her knees (especially noticeable when sitting and exercising) you can see the knee joint do a 360 within the socket and reset (ouch) and the ankle go almost hit a right angle (double ouch), not to mention the whole process looks freaky.

I've tried:
Removing new mods and sliders
Checking all her outfits and removing all CC
Resetting all her sliders to 0 and completely puddifying her again.

Nothing seems to change it. Whatever is causing this is making her knees go completely the wrong way when getting out of the shower as seen in the third pic and also apparently put a bit more junk in the trunk (a-hem) without the use of any sliders to let me know where it got there from. It's like that even when every slider is set to 0 and the default body settings are at 0 as well.

This isn't affecting any of my other sims or worlds, and specs are as follows: Win10 64-bit Home, 1TB HDD, 16GB RAM, Intel 7th gen i7, 4GB NVIDIA GeForce 940MX graphics.

Darn, I knew I was forgetting something- I cleared scriptcache but I don't think I got the simcompositor cache. I'll try that now. Thanks!

From the looks of it, it's either a CAS item wrongly enabled for your Sim's age, or a mod affecting movement.

Well, endless runs through Custard and Dashboard later, I still can't quite figure it out, but I did try exporting her and checking the S3P, so I'll try to drop her into a clean building world and see how it goes.

MC > Advanced > Reset sim?

Yes, but it didn't change anything. It's only affecting her too, I tested other sims and they work just fine. Dropping into a new world didn't change either. I might just call it a loss and just remake her, tbh. I've spent more time troubleshooting her than I did making her at this point, lol.

Sure thing, I'm assuming you mean the copy with CC? I'm getting ready to hit the sack since I've gotta work in the morning, but I'll try to upload her tomorrow for sure. Thanks for being willing to take a look!

Sorry about the lateness, here you go. Thanks for being willing to take a look

Yep, that's her, and yeah, everything was deleted. Thanks for looking, I'll try it right now and see what happens!

edit: So I just tried this and still nothing. I do notice that when I set her down to toddler view, her feet are hovering off the ground though, like they're sitting on something invisible, however this happens even with the version of her that has no CC attached. I'm gonna try the clean install route I suppose.