My corgi wore this to the office Halloween party and the two-legged illusion had everyone cracking up. The fabric is soft enough that she kept it on all afternoon without fussing, which never happens with costumes.
I worried the extra legs would confuse my dog, but he wore it around the yard like he owned the place. The two-feet illusion is genuinely funny from a distance, and the cozy fabric didn't seem to bother him at all.