To ensure a proper fit, you'll need to take 2 simple measurements: your waist and hips.
Thigh measurement is good to have as well, but not essentially important.
Step 1: Measure your waist
Wrap the tape measure snugly, but with a room to breath, around the natural indentation at your waist.
If you can't find this curve, bend to the side and the crease will show you where to measure.
This is your waist circumference.
Step 2: Measure your hips
Wrap the tape measure around the fullest part of your hips.
Make sure the tape measure is completely straight all around. T
he tape measure should be snug and parallel to the floor.
Step 1: Measure your band size
Your band size is the circumference measurement around your rib cage or under bust.
Holding the measuring tape parallel to the ground, measure around your rib cage directly under your bust.
Make sure the tape feels snug but not abstracting your breathing.
Step 2: Measure your bust size
Keep the measuring tape parallel to the ground and measure around the fullest part of your bust.
Make sure you are standing straight with your arms at your side.
You can wear a thin non-padded bralette or sports bra for support while taking this measurement.