This top from Madri Collection is a little bit on the pricier side, but if you’ve committed to pumping at work, I can see this design being worth investing in. I think this shirt does a good job at hiding the zippers so it does not seem like an obvious nursing top. With a button-down shirt you can just unbutton the top few buttons, but this may be helpful if you’re trying to avoid being exposed from the waist up during your pumping sessions. I think this shirt can even be worn after you’re done pumping or nursing, because it looks like a great cut regardless of its hidden function. This top comes in white and two prints, is machine washable, and is available for $148 at MadriCollection.com in XS–L. The Work Shirt in White
This maternity/nursing-friendly top from Storq goes up to 3XL and is $98.