Baby Outfits. 100 18-24 Months 86-92 42 16.54 52 20.47 27.5 10.83 44 17.32 44 17.32. 90 12-18 Months 80-86 40 15.75 50 19.68 26 10.24 41.5 16.34 42 16.54. 80 6-12 Months 74-80 38 14.96 48 18.90 24.5 9.65 39 15.35 40 15.75.