HOW TO MEASURE BRA SIZE

Around 80% in Pakistan wear ill-fitting bra because they don't know how to measure their bra correctly. A Perfect fitting bra is not only for good look but its also crucial for correct posture and perfect support.
Calculating a bra size is very simple all you need is a measuring tape and wear a non padded bra that fits
Step : 1
Calculate band size 
Measure the area under breast to find band size in inchs.
Band size is always in even number.
Example : if band size is 33.6 or 33.3 the make it in even number 34
Step : 2
Calculate Bust size/cup size
Wrap the tape around the fullest part of the bust ,make sure tape is not too tight or too loose.
Bust size can be in even number or odd number
Now subtract band size measurement with bust size measurement.
Example : if band size is 34 and bust size 37 then accurate size is 34C
If difference between band and bust size is 1 inchs then its A cup 
if difference between band and bust size is 2 inchs then its B cup
if difference between band and bust size is 3 inchs then its C cup
if difference between band and bust size is 4 inchs then its D cup 
and then so on...