When she first started her career, Florence Welch of Florence + The Machine made her own clothes. Now she's a fashion icon, known for her wild, edgy looks. "Nightline" anchor Cynthia McFadden caught up with the lead singer before she appeared in a white Sarah Burton gown at the glamorous Met Costume Institute Gala on May 7, 2012 in New York City. Watch the full story on "Nightline" on May 8.