Maternity pants?

I've finally gotten to the stage where I need to wear maternity clothes. All of the pants have the elastic, stretchy waist, which is cool since it can fit over my belly. However, every pair I have, the band gets folded over within the fabric when I sit down. I sit for a long time at my job (I work in an office). So, the bands of all my maternity pants have become permanently folded over within the fabric of the waist area. It looks awful when I stand up and it is obvious to other people. I like to look professional at work, not grungy. Any idea on how to keep the band straight and not crinkled/folded?