I love these dresses from Primary - they are very well constructed and so cute. The fabric is doubled, so this would be great for a fall/winter season. Size 1, on the website as height 30-33” and weight 26-30lbs. I would guess this is 12-24m depending on your baby. The next size up is a 2. NOTE: I repaired some pulled threads, shown in fourth photo. There is no sign on the front of the dress, but you can see the small knots where I pulled the thread through on the inner lining of the dress. Otherwise, very good used condition. No flaws. Some fading. Measurements: Chest: 10.5” flat across one side Waist: 11” flat across one side Length: 17” from shoulder Primary blue green “green apple” plaid long sleeve cozy dress - 100% cotton Non-smoking household Lots of baby/toddler clothes - happy to discount for bundles