Front body/waist circumference

Make sure there are no cramped or wrinkled areas around the chest or waist when the shirt is buttoned up.

Shoulder width fit

Choose something that fits your shoulders well. Make sure that you don't feel any tightness when you move your shoulders.

Sleeve length

A good rule of thumb is to cover your wrists. It looks neater if you wear a jacket and your blouse is not visible from the cuffs.

Skirt Size

The best position for a skirt is slightly above the hip bone. The skirt size should be such that your palm can fit comfortably inside.

Skirt Length

The best balance is for it to come slightly over your knees when you're standing, and about 5cm above your knees when you're sitting. Check the length based on this.

Pants length

Semi-flared and straight styles look best when the hem reaches just below the heel, while tapered styles look best when the hem reaches just below the ankle.