To crimp or not to crimp -- that's a hairstyle question for the ages. Portia de Rossi spices up her long ponytail with a crimped crown and crimped sections of hair twisted into the ponytail. If you have long hair -- or if you can afford hair extensions -- the long ponytail is an easy, always-chic topper to your prom outfit. Ask your stylist if crimping is for you.