Been messing around with d-force a bit and watched a cool tutorial which I figured I could apply to my own work. A problem I see a lot of people have, including myself, is that shrink wrap effect around the breasts of larger sizes. You can get a decent result with fit control or if you have Marvelous Designer that's going to give you the best result. But in a pinch d-force can work fairly well on some things. Here's a quick image I rendered as an example. Don't mind the clipping or noise or anything, I was more interested in how the shirt fit with some simple d-force steps.
Here's the image with just auto fit.
And with some simple steps.
Not perfect, but a lot better I think. If I took this in MD and then imported it back it'd be perfect, but then I'd need to do that for every pose.
Here's what I did.
1. Applied the shirt to the scene like the top image.
2. I added a d-force dynamic modifier to the shirt.
3. Hide the shirt, and open the timeline.
4. Go to frame zero and remove any of the really big breast morphs so she's a normal size.
5. Go to frame 30 and dial everything back in.
6. Go back to frame 0 and unhide the shirt.
7. In Simulation Settings, Turn Off Start Bones From Memorized Pose since it's a static image.
8. Under Frames to Simulate, select Animated (Use Timeline Play Range)
9. Hit Simulate and it will do it's thing, basically the breasts will grow through the simulation and do a decent job of making it fit like real clothing.
10. For this thing the result was a bit iffy, but I changed the geometery from Base to HD, and turned on the smoothing modifier which gets turned off automatically when you run a dforce sim.
11. For my character, I have an invisible geo shell around her so I set the shirt to collide against that to get ride of any poke through.
And there's the result. Obviously you'd want to pose the hands, bottom of the shirt, etc. But with a quick sim, maybe a bit of fit control after the fact, and you get a decent result. Way less cling and there's even some pull around the colors you'd expect from someone this size, the clothing wouldn't just lie flat against her upper chest, it'd be stretched out.
I figured I'd post this because the shrink wrap I see in games drives me nuts. Sorry if this needs to be elsewhere.