Find Your (Little’s) Perfect Size

Take the guesswork out of baby/toddler clothes sizes!










Use our easy sizing tool by entering your child’s date of birth, weight, and height to get accurate size recommendations. We go beyond age-based sizing to help parents find secondhand kids’ clothing that truly fits — making online shopping more reliable, affordable, and sustainable. 🌱

Young boy with dark hair and a slight smile, wearing a denim jacket with oversized sleeves, standing against a black background.

  • Shop confidently, knowing you’re getting clothes that fit — making sustainable shopping easier and more practical for busy parents.

  • Save time, save money, and reduce returns by finding the right fit the first time.

A young girl with curly brown hair wears a purple dress and red high-heeled shoes, smiling and standing indoors.
Young boy dressed in oversized white shirt, khaki pants, blue tie, and black shoes, standing in a room with wooden floor and beige wall, smiling with arms raised above his head, and a briefcase on the floor beside him.

  • Avoid the frustration of wrong sizes and wasted purchases when shopping secondhand baby and toddler clothes (NB–5T).

  • Our sizing tool uses real-life data to match you with bundles that work for your child right now.