The full det's on the Andy Dress:

Meet the Andy Dress by cult Australian label With Jean - a brand celebrated for its effortlessly cool, body‑skimming silhouettes and playful, youthful energy. This black mini is a timeless staple: simple, flattering, and designed to make you feel instantly put‑together.

Crafted in a soft, stretchy fabrication, the Andy features a collared, button through front enabling the shape and depth of your neckline to be determined "your way".  With long sleeves and a fitted silhouette that hugs in all the right places. Its minimal design makes it incredibly versatile.  The button through front is enhanced with ruching and provides a flattering look - dress it up with heels for a night out or keep it chic and understated for a long lunch or birthday celebration.  A tried and tested "little black dress".

Fabric: Polyester/Elastane Rib.  With Jean use high quality and costly polyesters, as they retain shape and dye better than most fabrics. This fabric contains a high component of elastane for a generous stretch and features a tight rib texture with a low shine finish.

Size: Size on Tag - M. Will easily fit a size 8-large 12 due to the generous stretch.