Optical illusion shoes, including sandals and heels, are being highlighted as a key component of summer dressing. Various celebrities, including Amal Clooney, Gigi Hadid, Jennifer Lopez, and Eva Longoria, have been spotted wearing these types of shoes, which are said to create a lengthening effect on the legs. The trend appears to include a range of styles and prices, from $24 flip-flops to heeled options.