Size Guide
Updated October 25, 2026
Find their next little fit right here. These are the sizing guides provided by our supplier, shown within Sunday & Sprout so you can keep shopping with us.
Use the chart that matches the garment type. Measurements and fit can vary by style. These charts are guidance, not a guarantee of fit; contact us if you need a specific item measured.
Before you choose a size
- Compare the chart with a well-fitting garment. Check whether a chart uses chest circumference or half-chest width.
- Check the unit labels carefully; keep inches and centimeters separate.
- Age labels are a starting point. Consider your child’s measurements and room to grow.
- 24 Months and 2 Years / 2T are separate supplier sizes and may fit differently.
- Choose a size on the product page to see current availability.
Baby
Weight and chest guide for newborn through 24 months.
On a phone, swipe across the chart to read the measurements. Open full-size chart.
Girls
Chest, shoulder-to-hem and inseam measurements.
On a phone, swipe across the chart to read the measurements. Open full-size chart.
Boys
Chest, shoulder-to-hem and inseam measurements.
On a phone, swipe across the chart to read the measurements. Open full-size chart.
Boys: additional measurements
Half-chest, shoulder-to-hem, inseam and sleeve measurements. Half-chest is the width across a garment, not chest circumference.
On a phone, swipe across the chart to read the measurements. Open full-size chart.
Boys’ swim trunks
Waist, hip and length measurements.
On a phone, swipe across the chart to read the measurements. Open full-size chart.
Shoes
U.S. shoe sizes with measurements in inches and centimeters.
On a phone, swipe across the chart to read the measurements. Open full-size chart.
Charts supplied by Honeydew USA; checked October 25, 2026. Supplier charts may change. Ask us about fit.