definition
strict definition
infant clothing store
A clothing store specializing in garments for children under three years old, including babies and young toddlers.
An infant clothing store is a retail space specializing in clothing for persons below 3 years of age, especially babies and young toddlers.
The defining age range is below three years, so the store can serve both babies and young toddlers. The specialization concerns the clothing sold rather than the age of the purchaser.
A children's clothing store can serve a wider range of young people. A second-hand baby clothing store additionally specializes in used, unwanted, or returned infant garments.