Make sure the hips area of the shirts and pants are only weighted to the hips bone and not affected by the spine or upper legs bones. Pants also need to be a bit shorter to not clip with the shoes. Long shirt needs some more weighting around the hips area
Just some clipping with the feather shirt for both male and female version. Needs some more hips weighting at the back are and more upper legs weighting in the front from accorfing upper leg bones for each side
