Choosing the right shirt size according to your body shape ensures a comfortable and flattering fit. Here’s a step-by-step guide to help you pick the best shirt size based on your body type:

Before selecting a shirt, take the following measurements (in inches or centimeters):
Neck: Wrap a tape measure around the base of your neck (leave room for one finger to fit snugly).
Chest: Measure around the fullest part of your chest (under the armpits).
Waist: Measure around your natural waistline (narrowest part, usually above the belly button).
Sleeve Length: From the center back of your neck to your shoulder, then down to your wrist.
Torso Length: From the base of your neck to your waistline (for untucked shirts).

Please click on the above image to enter the corresponding size chart. Brands vary in sizing, for more accurate size selection, so always check their specific size guide.

Different body types require adjustments in fit:
A. Slim / Ectomorph Body.
Fit: Slim-fit or tailored-fit shirts avoid excess fabric.
Key Areas: Ensure shoulders fit snugly (no sagging), and waist isn’t too loose.
B. Athletic / Mesomorph Body.
Fit: Regular fit or athletic-fit (broader shoulders, tapered waist).
Key Areas: Chest and shoulders should fit comfortably; avoid tight armholes.
C. Stocky / Endomorph Body.
Fit: Classic fit or relaxed fit for comfort around the midsection.
Key Areas: Ensure enough room in the waist; consider "big & tall" sizes if needed.
D. Tall or Short Torso.
Tall: Look for "tall" sizes (longer sleeves & torso).
Short: Opt for "short" sizes or brands offering adjustable lengths.

Shoulders: Seams should align with your shoulder bones.
Collar: Should allow one finger to fit comfortably when buttoned.
Sleeves: Cuffs should reach the base of your thumb when arms are relaxed.
Length: Tucked shirts should stay in place; untucked shirts should cover the belt.

Stretchy Fabrics (e.g., Polyester Blends): Can fit slightly tighter.
Non-Stretch (e.g., Cotton Dress Shirts): May need a more precise fit.
Casual vs. Formal: Casual shirts can be looser; formal shirts should be trimmer.