Chelsea is just on 8.8-9kg Last weigh 4 weeks ago was 8.5kg, but i weighted her last week at home and she was 8.7kg. Theres no way it does up in the middle....i tried doing it tighter and when she sat her lil baby tummy rolled over the top :P

So i figured it was either to tight, or to small.... but their site says goes up to 11kg for the Mediums?? Or option 3...im completely useless and not puttin it on right?? hahaha