Bust/Chest:

With arms relaxed at your sides, measure under your arms around the fullest part of your bust/chest.

Waist:

While keeping the tape comfortably loose, measure around your natural waistline (the smallest part of your waist).

Hips:

Standing with legs together, measure around the fullest part of your hips.

Inseam:

Measure the inside length of your leg from your crotch to bottom of your ankle.