Okay, at 16 weeks, I feel that I am definitely showing... but I know strangers have not a clue yet. And I saw a good friend from high school a couple of nights ago and he said he couldn't tell.
But I officially feel (psychologically) more comfortable either throwing a hoodie over my typical tank top/T shirt or wearing one of the two new tops I bought-- non-maternity, but they float away from the body (as opposed to the form-fitting stuff I usually wear). I don't know when I'll start wearing "real" maternity clothes, but I am going to a big baby consignment/yard sale next week and they will have maternity there, so I am hoping to snag some bargains.
So far, I guess things are progressing as I might have suspected-- I am kinda slow to "show" a whole lot, but I think once I get into my third trimester, I will stick out about 5 feet, because I have such a short waist. I've got like 3-4 inches between my ribs and hipbones. There's nowhere else for baby to go but waaaaay out in front.