|Chest (in)||34-36||38-40||42-44||46-48||pretty big||big|
|Waist (in)||30-32||32-33||32-34||36-38||pretty big||big|
Measure under your arms around the fullest part of the bust. be sure to keep tape level across back, and comfortably loose.
and hey, relax, there's no pressure here.
Measure around natural waist with a loose tape. natural waist includes that part you wish you didn't have.