No More Knock Knees

I need to sleep with a pillow between my legs because it’s uncomfortable on my knees and hips not to. But during the night I might roll over and roll back and I lose the pillow. Surely I’m not the only one in the world with this problem. Why don’t we just sew pillows in the knees of our pj’s. Hell, do the same for the shirt. If you roll onto your side, there’s a pillow in your shoulder, but on your back: no pillow (better posture). Essentially we are taking some of the bed, and putting it into the clothes. Maybe take it all the way and you can just lie down anywhere and go to sleep because it’s essentially a mobile bed.