In other words, “slutty” outfits are generally more modder-friendly. Read: Outfits that cover more skin require more bone adjustments.
Since I became familiar of AA2’s (and PPD’s) skeleton out of animation modding, this became a straightforward yet tedious task. The guide mainly focused on bone adjustment using SB3U. The guide gave me a good grasp about the concept of bone weights. Without those, the clothing will just freeze in the T pose as the rest of the body displays another animation. This is the result of following an image guide from Uppervolta (upillu2902) which is supposed to be a documentation on how to port clothing from PPD to JG2. Since I am someone who has zero experience in 3D modeling whatsoever, this makes me proud (cough).