Vintage child’s top & pants traditional Chinese oriental ebroidery size 4 pure silk LYLBT3

This is a stunning, 100% pure silk,  matching set, pant and top traditional Chinese children’s clothing.  circa 1990’s.  It says “4”, The brand is Leier.  I’m finding it quite hard to see what the conversion sizes are to AUS sizes, so there is a guide in the table below or please look at my dimensions as the garmets are measured lying flat. The pants have elastic in the waist, so there is plenty of give. The embroidery is just divine, with a dragon on the back of the shirt,and a Peacock looking bird on the front.  Please refer to the photographs.

Dimensions lying flat

under arm to under arm: 34 cm w /  13 1/4  inch

top of shirt to hem 37cm L /  14 1/2  inch

sleeve length : 13 cm L  /  5  inches

Pant waist elastic not stretched: 22 cm w /8 3/4 inch

waist to leg hem: 52 cm L / 20 1/2 inches

crotch: 32 cm L / 12 1/2 inches

This is an approximate Chinese sizing chart