Sometimes the simple things are the best, such as in this trendy vest. Patons Yarns

Bust measurement:
Small 30-32 ins [76-81 cm]
Medium 34-36 ins [86-91 cm]
Large 38-40 ins [97-102 cm]
Extra-Large 42-44 ins [107-112 cm]

Finished bust:
Small 37 ins [94 cm]
Medium 40 ins [102 cm]
Large 44 ins [112 cm]
Extra-Large 47 ins [119.5 cm]

MATERIALS
Patons Classic Wool (100 g/3.5 oz) or
Patons Décor (100 g/3.5 oz)
Size S M L XL
Main Color (MC) (Dk Green) 3 3 4 4 balls
Contrast A (Lt Green) 1 1 1 1 ball
2 colors, 4-5 balls total

Sizes 4 mm (U.S. 6) and 4.5 mm (U.S. 7) knitting needles
3 stitch holders
Metal clasp fastener

Design features contrast color edging.

Construction schematics are provided in PDF download (June 2009).