I showed early with my first, earlier with my second and I couldn't do up my jeans at 6 weeks this time, with my third. I don't think it at all possible that I have more then one baby - but rather more likely that my uterus 'remembers' what it is suppossed to do and does it quickly. I have been wearing maternity clothes from eight weeks and get lots of comments when people find out I'm not due until 5th August.