There are 4 key areas to measure when fitting swimwear. To achieve an accurate measurement we recommend wearing minimal clothing when measuring and holding the measuring tape straight and parallel to the floor.
Bust: Measure the fullest area of your bust and straight around your back, while standing with your arms down, back straight.
Under Bust: Measure with your arms out shoulder length keeping back straight.
Waist: Measure the smallest section of your waist.
Hips: Putting your feet together, measure the fullest part of your hips.