Size Example - Crop Tops
Jamie wears size medium normally. She's 5 feet 9 inches (175 cm) tall, chest circumference 35" (88.9 cm), waist circumference 29" (73.9 cm), hip circumference 40" (101cm).
Take -> chest circumference (i.e 35") and divide by 2 to get width = 17.5"
Remember crop tops are a little bigger than shirts so add 4-5 extra inches = 22inches (approx) = size small
If Jamie wants a sexy fit she can get a small, if she likes a more baggy fit she can get medium.
Approx Size: (S) 2-4 (M) 6-10 (L) 10-14 (XL) 14-16 (2X) 16-18