https://www.disabilityscoop.com/2017/08/17/target-clothing-special-needs/24042/

"Beginning this week, Target is marketing a selection of t-shirts and leggings with flat seams that are free from bothersome tags and embellishments in order to “minimize discomfort when in contact with the skin,” the company said. In addition, the retailer’s sensory-friendly leggings include extra room in the hips and a higher rise to accommodate older kids who wear diapers."

Now if only someone would come up with a rash guard without a mock turtleneck, we'd be all set.