The Wraps of the Winterbringer set has several items within the set clipping with each other.

1. The staff is clipping into her sleeve
2. The sleeve's upper part on the same arm (left arm) is clipping with the cape
3. The gem on her back is heavily clipping with the cape. It looks like the gem is in a different slot, so it doesn't have the same physics as the cape does and is static, which causes the heavy clipping.