This is a keyhole style tank top that fits most female humans. It was made using Blender's cloth sewing springs. Recommended modifiers: Solidify (.1 in/.25 cm, -1, only rim) and Subsurf (1 will do, but 2 is better). Six more materials are available in Materials. Yvonne is also wearing Tight Jeans by punkduck.
CC0 - Creative Commons Zero