11-15-2012 12:00 PM
Could be a couple of things.....
First, remember that even rigged mesh does not respond to most of the shape sliders in a shape. This means, that if your avatars shape is anything but the default you are modelling against, it will likely not fit right. This is why most mesh designers make multiple sizes, to accomodate different shapes.
Second, if some of the vertexes in your mesh aren't correctly weighted, they may not 'move' to the correct places in relation to the shape of the avatar. Verify the vertexes in those areas are all correctly weighted.
11-17-2012 02:45 AM
That is an issue with the rigging of the item. From the look of the movement im guessing you just copied the weights from the SL avatar. This is never a good idea as the rigging of the SL avatar to the skeleton is horrible and it moves awful.
You need to weight paint your item and smooth out rhe rigging. Also keep in mine that well rigged items WONT match perfectly to the SL avatar because the SL avatar moves horribly and if you want your clothing to move nicely your avatar will peek through (thats why we use alpha layers)