Love this!  If you're between sizes go with what the other reviewers suggest and go buy the smaller size.  That's what I did and the item fits well but will be plenty roomy as I continue to expand.  This looks just like you're wearing a tank top under your top.  As the description mentions, this product isn't strong enough to hold up your jeans on its own really.  One of the maternity books advised taking a regular hair elastic and looping it around the button of the jeans, through the button hole, then back over the button of the jeans.  This technique with the belly band works perfectly, at least for early pregnancy which is all I can speak to.