Clients should wear comfortable clothes in which they can easily move. No shoes are needed for workouts. Pilates, much like yoga, focuses on posture, balance, and flexibility and works to strengthen the body. Because of this, your workout attire should be comfortable and non-restricting (there's a lot of bending, stretching, and twisting involved), body-hugging (formfitting tops are essential in ensuring the instructor is able to see muscle movement during the workout), and, of course, breathable and sweat-wicking. Another important thing worth mentioning? Pilates is typically done barefoot, so no need to worry about purchasing the proper sneakers. Instead, either go shoe-free or opt for a pair of non-slip grip socks to help with traction.