I'm a size 6 normally. I went up to a size 8 at around 14weeks. We told ppl at 11weeks and no one else but me could tell my little 'pudge' was a pregnant belly. I really popped at about 18/19weeks. With my second pregnancy people were guessing at 8weeks that I was pregnant. Now in my fourth pregnancy (not all full terms) my close friends who know I'm pregnant can notice my little belly at 6weeks. But people who don't know haven't asked yet.