I really like this shaper and I have purchased many of them.
It does run small in my opinion.  The underwires are comfortable but they do eventually pop through the fabric and no amount of mending will keep them in place for long.  This is the reason I took off a star.  The shaper isn't a girdle, so don't expect that result, but it does help my ample body to not feel quite so large.  I wear this shaper every day, all day, and because it is summer, it does get pretty warm sometimes, but I just grin and bear it since I don't really have any other option.  It does lift and seperate, so you don't get that unaboob look. I think it's great for the price.