Helena Bonham Carter Straight Neckline A-Line Sweep Train Organza 2011 Oscar Dresses

It's not your bra size. Your arms should be relaxed, down at your sides. Measure around your body crossing over the fullest part of your bust. The tape measure must run directly over your nipples and across your shoulder blades on your back.

Measure above your breasts in the same manner as you measured across them. Measure around the torso directly above the bust line. From armhole to armhole
+- 8cm down from neck

This measurement is only needed for strapless and sweethert style dresses

Measure under your breasts in the same manner as you measured over them. Do it around the torso directly under the bust line.

Typically it's an inch or so above your belly button. Measure around the waist at the narrowest natural waistline point.

Stand with your knees together. Measure around the fullest part of your tip. Taking note of how far down from the waist that you are measuring. As a guide, this is often 20cm below your natural waistline. This measurement is not needed for full gowns.

Measure from the top of your shoulder down to bust point(nipple). This measurement is not needed for strapless and sweetheart style dresses.

Measure from the top of your shoulder over your bust straight down to the ribbon on your waist. This measurement is not needed for strapless and sweetheart style dresses.

You should stand upright and your feet should keep together without shoes.

From the edge of that shoulder socket measure all the way over to the same point on the other shoulder along the back. This measurements is not needed for strapless and sweetheart style dresses.

Measure from the top of your shoulder to the natural bend in your wrist. This measurement is only needed for long sleeve style dresses.