I have a medium coorie sling for DD, but I think it might be too big. I will probably order a small one to see if it is any better (I started off with a large and they were very good about exchanging it). I was just wandering what size coorie other people had. I am 5' 6" and about 9 stone. DD is 5 weeks and 11 lbs. It says in the instructions that if baby can be tipped into sling easily it is too big, and this seems to be the case with DD. On the other hand maybe my technique is wrong.