well here it goes...stand perfectly straight when measure....shoulder to hip.. a 3 is 24" 61cm....conventional size m....women's t-shirt s-m...height 5'1 to 5'11...weight 131 to 160 lbs....cup size c-d...I hope this helps. and single sling fits newborn 8lbs to 35 toddlers
May I ask how big you are? Im 5'1" and a little overweight and I fit measurements but a bit over the weight size. Curious to see if I should bother bidding LOL