Jenna, who is 19, is convinced she has terribly fat hips although her weight and hip measurements are within the healthy range. She has tried repeatedly change her hips through special exercise routines but this has not been successful and she has recently focused on wearing baggy clothes to try to hide what she regards as a terrible flaw. She recently asked her parents if they would pay for liposuction on her hips, but they refused saying there was nothing wrong with their size. Jenna has become so distressed that she recently began refusing to go out with friends and tends to hide in her room, berating herself for being unable to achieve the kind of hips she wants. What is the most likely clinical diagnosis for Jenna's behavior?