>>1005840 (OP)
Bro you got scam, no one does stuff like this in clothing models.

>>1005845
huh?
I just downloaded the two models and I want to use the together

>>1005840 (OP)
rotate the sleeves with proportional editing (only connected) with the 3d cursor as pivot.
Place the cursor by selecting a loop around the shoulders and shift+s cursor to selected.
Might take a few tries till you get the cursor position and proportional range just right.
You can also store your edits in shape keys to mix and match different versions till you find something that looks good.

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>>1005919
>the 3d cursor as pivot.
still a beginner at blender.
hope I can find a tutorial on youtube but not sure what to type in

>>1005840 (OP)
it's tricky and you won't manage it because you're a beginner, but you want to pose the human model so it fits the dress, skin the dress to a duplicated armature with that pose applied as default and then straighten the arms out

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>>1005919
or maybe this way?
though not sure how to merge it back

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>>1005932
ugh

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kinda did it. it's a mess and there are holes in the mesh

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Alright, next step is to have the dress stay on the body and on the rig when posing.
I've tried parenting with auto weight but the dress appears in a different spot and is scaled up

I've deleted the keyframes that were on the rig of the female.

>>1005948
the female rig has a certain pose btw, now it's in rest position

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cleared the parent of the dress and then applied it to the rig as envelope weights....

buut a new problem appeared. Posing is fucked, it's stretched. I previously scaled down the model maybe it's linked to this?

>>1005950
to be clear that happens when I rotate the bone

OP you really ought to learn the basics.
Some tutorial covering rigging and custom character creation etc should do it.
You don't know how to set the pivot point ffs. (It's in the top icon bar top-right-ish btw)

>>1005919
You don't need to do all of that. Just go to sculpt mode and use face set lasso tool on the sleeves, then pose it with pose brush (set to face sets, not topological)

>>1005988
>idiots telling newbies what to do
Go to school and learn how real 3D programming works or watch Maya’s tutorial videos for free: https://youtube.com/watch?v=LJLo6MafPVM [Embed]

Blender is never going to work on fixing or solving problems with your dress.

jesus christ... blender fags, everyone

>>1005840 (OP)
Just make a shitty rig and move it into position

>>1005840 (OP)
3dsmax. Rig the body, the arms at least, and place it in the same pose as the dress, then add a skinwarp modifier on the dress with the body as target, set the distance to 0, convert to skin. Now select the body again and move the arms back to the T pose, now you can paint the skin on the dress to select only the vertexes in the arms.

Another way is maybe use soft selection in 3dsmax to rotate the vertexes with falloff