Neck Measurement: Measure around your neck, about an inch above where your neck and shoulders meet. Keep the tape measure level, just snug enough to get an accurate measurement. 

Chest/Bust Measurement: Have someone measure under your arms around the fullest part of your chest (or tummy if larger than your chest).

Sleeve Measurement: Stand with arms at your sides. Have someone standing behind you measure from the center of the base of your neck to your shoulder and from your shoulder to the bottom of your wrist.

Waist Measurement: Measure (over a shirt, with no pants) around your waist. Keep one finger between the tape and your body.

Belt Measurement: Add two inches to your jean/slack size.

Hip Measurement: Stand with your feet together and measure around the widest part of your hips.

Inseam Measurement: Stand with your boots on and have someone measure from the crotch seam of your jeans/slacks to the desired length including your boots.

Boot Measurement: Your boot size is not necessarily the same as your shoe size. The best way to determine whether boots fit is to TRY THEM ON. Your boots should feel snug without pinching anywhere. You should have room for your toes. The widest part of the sole should be where the ball of your foot rests. You should feel about a half an inch of heel slip - that's normal. It takes two or three days of wear until the sole starts to flex with your foot and the heel slip stops.