my sister-in-law is a size 22 maybe 24? and was before her pregnancy a year ago and VERY much looked obviously pregnant. Everyone is different and I'm sure it would also have alot to do with the size of your baby, where it sit's in your belly ect,ect... With saying that, I had a friend who was a very tiny size 6 -8 and had not much more than a small bump that looked more like she finally ate than was pregnant. Don't worry about it too much, I'm sure everyone will know from your beautiful glow and loving smile that you are pregnant before any eyes ever look towards your tummy! Congrats and enjoy!