The corset is pristine black leather with an attached grommeted garter belt, though given it was styled over her coat, she didn't wear it with stockings and just let the straps fly free.
Wear a pair of jeans or sweatpants and heels ... You can shop corset style such as the basic Black Corset Crop Top £17.99 and the Black Spot Sweetheart Frill Corset Puff Sleeve Top £23.99.