I showed straight away. I had to wear maternity clothes at about 11 weeks into the pregnancy!! I had a huge growth spurt early on and then at about 30 weeks it just halted (although, that is what I thought happened, people told me otherwise). Some people were telling me I could not get any bigger than what I was. Some people don't show till they are 4 months or so. It is just amazing how different our bodies are.