Buy Buy Baby at Kingsbury Center in Chicago has a Nursing room for moms to sit a moment and express breastmilk for their infants.
This BBB has standard nursing room amenities like a comfy chair, an outlet so moms can conveniently use electric breastpumps, they can lock the door while expressing milk for their infants, and of course there's the baby changing station and can to dispose of those used diapers.
Ask the store staff or manager for help if you have any problems in this nursing room.