1 Collar Size
Lay the shirt or top flat with the collar fully extended. Measure from the center of the collar button to the far end of the buttonhole.
2 Shoulder Width
Measure across the back from one shoulder seam to the other
3 Bust Size
Measure across the chest, from underarm seam to underarm seam. Double this measurement for the full bust size
4 Waist Size
Measure horizontally around the narrowest part of the waistline
5 Length
Measure from the shoulder's highest point down to the bottom hem.
6 Sleeve Length
Measure from the shoulder seam to the sleeve's end (cuff)