I have included with my Awtter 2 onesies made for this model but when moving around, the tail will always clip through them.
I tried resizing the Awtter's Tail2-7 bones but the onesies follows it. Resizing the onesies' could work but needs to be at 2x scale and doesn't look good. Changing both doesn't change anything as it will prioritize the Awtter's scale.