Black, slightly sheer knit singlet from yohji yamamoto line y's. Looks simple and indeed is, but is less so than it looks: the singlet is asymmetrical, with the left armhole more open than the right and also an angled hem.

Size 2 (JP womens M), approx AU womens S
Check measurements to confirm fit
All measurements taken flat

Shoulder width: 22 cm

Width (at underarms): 31.5 cm
Waist width: 27.5 cm
Length (neck to hem): 51.5 cm
Hem width: 34.5 cm

Fabric unknown (tag cut)