No — "showing" later doesn't usually have anything to do with baby's size. As long as your OB says your pregnancy is on track, there's no need to worry. (At your appointment, your doctor feel the size of your uterus — it'll be about one and a half inches below your belly button by the end of the month.) Some women just pop out sooner than others. Assume this means you have stronger ab muscles than your pal (don't tell her we said that), and enjoy wearing your clothes a little longer. Before you know it, you'll be wondering how your giant belly grew overnight.
Plus, more from The Bump:
Excerpted from The Baby Bump: 100s of Secrets to Surviving Those Nine Long Months