Once Upon a Child in Gambrills, MD, is a well-maintained and organized store that offers a variety of clothing for children, ranging from newborn to size 16. Reviewers appreciate the cleanliness and the friendly staff who are always available to help. Customers enjoy browsing through the large selection of items and often leave with great finds at affordable prices. However, some reviews mention that the store can be somewhat pricey for used clothing and that they are very selective when buying items from customers. Frustration arises when not all items are processed during drop-off, leading to dissatisfaction over the selection of clothes accepted. Despite these concerns, many parents find value in the quality of the clothes, which can be passed down to younger siblings. Overall, Once Upon a Child is a popular choice for families looking for children's apparel.