You can use sweatpants or pajama bottoms for the pants and a plain white long-sleeved shirt if you can't find or make a peasant style blouse in your child's size.
Expect to hear requests for Aviator Nation sweatpants, Fossil rain boots and Guess' line of Invisible Children tees.
Walking into the place where you are going to fill out an application in sweatpants and a T-shirt probably won't land you the job, or make your application stand out at all.
Justice is currently one of the most popular girls clothing stores that includes dresses, sweatpants, and everything in between.
They also sell pink crew sets with sweatpants and crew-neck sweatshirts to match.