From the Wikipedia article

A shape-up, also called a line-up or an edge-up, is a hairstyle where the natural hairline is trimmed to look straight and sharp. It became popular in the 1980s, especially among people with Afro-textured hair, and influenced styles like fades, parts, and waves.

Text from Wikipedia, licensed CC BY-SA 4.0, taken from the style's article on Wikipedia.

Source

  • Source: Wikipedia, 'List of hairstyles' (en.wikipedia.org, CC BY-SA 4.0) + each linked article's lead summary via the Wikimedia REST API; image files from Wikimedia Commons with their own licence per file
  • List row: 34 of 99, from List of hairstyles (list revision 1376698486, fetched 2026-10-02T20:43:21Z).
  • Article: Shape-up
  • Text licence: CC BY-SA 4.0; adapted text stays under the same licence.
  • Photograph: the Commons file D-Wade_in_Chicago_-_cropped_version.jpg exists but records no licence value, so no photograph is shown here.

Words of quoted Wikipedia text on this page: 100.