Newborn and 0–3 month labels are not identical across every clothing brand. Babies also differ in size at birth and grow at different rates, so a label should be treated as a guide rather than a promise of fit.
Check the brand's chart
Compare the chart's height or weight range with the information available for your baby. If the chart uses garment measurements, do not confuse those with body measurements.
Buy a practical amount
Start with a manageable number of everyday outfits based on your laundry routine. You can add more once you know which size and style fit best.
Consider the season
Choose clothing suitable for the weather and indoor temperature. Removable layers can help you adjust clothing, but avoid over-bundling a baby.
Prioritise useful details
Look for comfortable openings, secure fasteners, clear care labels and no loose decorative parts. For sleep and travel, follow current safe-sleep and car-seat guidance.
Simple buying rule
Check measurements first, buy a small rotation, and keep the seller's exchange policy in mind. There is no universal size chart for all brands.