Having a properly fitting jacket will make all the difference in how you look. Wearing a jacket that is too large will feel cumbersome and make you appear bigger than you actually are. On the other hand, a jacket that is too small will bind and gape inappropriately when buttoned, be uncomfortable and will make it appear that you have gained weight since you were fitted for the jacket. A proper fitting jacket will give you a professional, classic look that is appropriate for most work situations and formal gatherings such as a funeral or an important meeting. There are ways to measure your self in order to find the size you need.
Ask a friend to help you measure for the most accurate sizing.
Stand with your arms straight down at your sides.
Let your friend measure you around the largest area of your chest and arms.
Write the measurement down on a sheet of paper. Subtract 6 or 7 inches from that number to find your jacket size. For example, if your measurement is 49, your jacket size is a 42.
Determine the length of jacket you will need by using a size chart available at the clothing store or use one online if you are shopping for a particular brand. For instance, if you are 5 feet 11 1/2 inches to 6 feet 3 inches tall, you need a long length.
Determine your bust measurement. Using a cloth tape measure, bring the tape around the centre or fullest portion of the bust.
Write down the bust measurement and take it with you to shop for a jacket.
Ask the salesperson for a size chart. Most brands vary slightly in their sizes. You can check online for a size chart if you have a particular brand in mind. Typically, a woman with a bust measurement of 37 inches would wear a size 14 jacket or a medium.