Ask yourself what size you take “off the rack”. Each garment description suggests the range of sizes the piece will fit. Skirts and pants have elastic waists and are generally a one-size. The garments are listed in Australian sizes. There is a sizing chart shown to give you comparable international sizing.  If for example you are a size 8, and the garment description says the dress is ideal for a size 14-16, the dress will be too big for you. You should find the sizing self explanatory. The beauty of a Vivian Chan Shaw design is that the soft fit of the knit will fit many sizes.