All Bitty's come in different shapes and sizes … remember that IBBs are made for for everyone whose breast size range from petite to average. Instructions for sizing without a bra on:
Measure your ribcage just below the bust line and add 4". This gives you the band or bodice size, e.g., 32. If you measure 31, round up to the nearest even number.
Measure your bust at the fullest point of your breast around your ribcage, rounding up to the nearest even number. If you measure 33, round up to 34.
- Take the difference between the 2 measurements, this is your cup size.
NOTE: We recommend going up a band size and possibly a cup size.