Problem with Weights dress

Hi. Share the blend please

It'd be best if you were to postpone finishing this project, watch tutorials from a different author and made something very simple like a tank top that does not go below the navel to learn how to adapt clothing because this is not a good choice for that.

It will be faster to re-do the whole thing instead of fixing it since everything needs to be re-done either way:
- export the garment from MD as Weld, thin;
- type in the search bar DressPanels and clone it, export the blend, open it, import the garment;
- close holes in the sleeve and the bottom area, unwrap;
- select the reference, shift-select the garment, transfer weights like this, use Clean with All groups, then Limit total;

- add Armature modifier. In the search bar type Calf and delete both vertex groups, do the same for skirt and thigh. Leave only Thightwist vertex groups. In weight paint mode click on Normalize all, uncheck Lock active;

- disable Limit selection to visible, press B, select the bottom like this, enable sync in uv editor and, holding shift, deselect the bow ( Ignore what that I underlined - button here );

- switch to weight paint mode, enable Face selection masking for painting and Vertex selection masking for painting. Select b__L_ThighTwist__, then click Remove. Then select the weight gradient tool, click and drag to paint the left side like in the pic. Then repeat the same thing for b__R_ThighTwist__;

- select b__Pelvis__, without removing paint from the top of the skirt, stretch the gradient so that it is similar to what it looks like as is;
- with b__Pelvis__ selected press Normalize all and select Lock active;
- you can check how to mesh moves if you want;
- rename the uv map to uv_0, create a new one and name it uv_1. Transfer the uvs from the reference with Nearest face interpolated!;

- vertex paint the dress like this:

- unfold rig, make top and bottom visible and selectable. Select the top, press Shift D in 3d view, then Esc to duplicate. Do the same for the bottom. Select top.001, shift-select bottom.001, join them with Ctrl J;
- delete all areas of the garment hidden by clothing, put the uvs of the garment in the freed space;
- join the body with the garment, assign the type and the cut number, clone lingerie set ( your dress has no skirt bone now that you deleted them, so you can import it in the lingerie set package), import the blend there

No, they are in the space for shoes. Use this template
sims4studio.com/thread/62/fix-uv-map-template

It is the reference, it is similar to your dress, so you can get a good uv_1 by transferring this data from it.

No, uvs and weights are two different things. It would be best if you watched this video about uv mapping to actually visualize what this is, but basically.
Your model exists in three-dimensional space. Each of the vertices it is made of has 3 coordinates along X ( horizontal ), Z ( vertical ) and Y ( depth ) axes.
To apply a texture ( two-dimentinal image) to a 3d model, you need to define how it will be projected by creating a 2d representation of the 3d model. You need to "unwrap" it like a present ( or like peeling a tangerine ). This process is called UV unwrapping. It is done in two-dimensional space where U = horizontal axis and V = vertical axis. Hence, they are called UVs. Each vertex in UV space has coordinates along U and V axes.

In ts4 a CAS item has two uv maps. One is for projecting a texture ( uv_0 ) and another for defining how the item will morph (uv_1). I will not be going in how the morphing works but all you need to do it to transfer a uv_1 from a mesh that is of the same type (skirt/pant) and length as yours.

No, I mentioned to disregard the underlined pelvis, do not delete it, I showed where the Remove button is on a different image, before that

We've all been there, don't worry, one thing is that it is best to learn those things by watching videos because, as I said earlier, you need to visualize these concepts and see where the buttons are

The skirt received weights from the hands because they were closer to that area than the dress.

Do it this way
- do step 1-8 but make sure all buttons are enabled;

- raise both arms up;
- select the dress, in edit mode select the distorting area on the right side, select b__R_ThighTwist__, click on assign, lock the vertex group ( the lock icon next to the name of the vertex group, click on it ). Do the same for b__L_ThighTwist__ on the left side, lock it;

Create textures with bigger margins (at least 7 pixels)