Participants will be randomly assigned (like the flip of a coin) to receive 22 sessions (over 24 weeks) of either CBT or SPT. Both treatments teach participants about BDD. CBT focuses on helping participants to develop more adaptive thoughts and beliefs and to gradually reduce avoidance and compulsive (repetitive) behaviors. SPT focuses on relationships, feelings, and other factors that may affect BDD symptoms (e.g., work, stress), and helps participants to cope with challenges in their life by improving self-esteem and positive coping.