In the film, Emma wears heavily weighted "lead" boots to keep her from floating away. While the original stunt boots are rare film props, you can find high-quality replicas or DIY guides for cosplay:
If you want to build your own, creators on DeviantArt and YouTube offer step-by-step guides on creating the platform look with LED lights or metallic finishes. emma bloom shoes buy
Original Stunt Boots from Prop Store provide the most accurate visual reference for the leather and metal buckle design. In the film, Emma wears heavily weighted "lead"