Ameda Girls Soft Lace Ruffled Petti Dress Soft ruffled lace dress S: 6months - 1year 15" Length, Chest is 14" - 15" M: 1year - 2years 16" Length, Chest is 15" - 16"  L: 2years - 3years 18" Length, Chest is 16" - 17"  XL: 3years - 4years 20" Length, Chest is 17" - 18"  XXL: 4years - 5years 22" Length, Chest is 18" - 19"