I ordered two of these belly bands: one in white, the other in black.  I ordered size 3 (I'm a size 16 pre-pregnancy) and I'm glad I didn't go any larger or smaller because it fits just right.  I'm 12 weeks and my regular pants, shorts, and jeans no longer button comfortably but with the use of the belly band, I've been able to wear my dress pants to work fully unzipped (yikes!  I was nervous at first) but I was no worse for the wear because the band supported them and mostly hid the fact that they were wide open beneath the band.  As noted by an earlier customer, the black band drastically reduces the sight of unbuttoned pants as opposed to the white one simply due to the nature of the color itself.  I have to adjust the band maybe 3-4 times total in a day, but that's normal with any garment you'd wear to need a little adjustment after several hours of wear.  Overall, I am very pleased that I bought this product and hope to purchase a couple more colors now that it works.  The band is not super tight right now, which is great.  No binding.  As my belly grows, I suspect the band will feel great as it begins to stretch with me since it'll provide a snug sleeve of support.  Looking forward to it.