Almost equally majestic is when Dick Grayson is out of costume, and just lets his hair flow.
Like all great things, the long hair would not last, and eventually it got chopped off. Literally. Shortly after the issue that these pictures appeared in, the Nightwing solo ongoing started. In the middle of the first issue, a villain named Reynard (guy in a fox mask) swings an axe at Nightwing. Nightwing is able to mostly dodge it, as only his ponytail is somehow chopped off.