Patchwork sleeveless top by japanese designer ritsuko shirahama. Made from mix of materials (silk, rayon, nylon, polyester, and cotton), the main body section is a blue silk with a repeating embroidered pattern, with a series of small patches (some striped, some solid) along the hem. 

Another top from the same collection here.

Size 1 (JP womens S)
Check measurements to confirm fit
All measurements taken flat

Shoulder width: 35 cm
Width (at underarms): 45 cm
Length (neck to hem): 60.5 cm
Hem width: 47 cm

Mixed materials of silk, rayon, nylon, polyester, and cotton.