At Darren Romanelli's studio, the doctor is always in. With myriad identities that evolve as quickly as the trends he shapes, the 34-year-old innovator, a.k.a. Dr. Romanelli, a.k.a. DRx, is already an international household name. In fashion, music and marketing, Romanelli applies his singular aesthetic vision and exacting standards to a unified stylistic philosophy he calls personalization customization.