A shape-up, also called a line-up or an edge-up, is a hairstyle that involves cutting along the natural hairline to straighten it. Edge-ups are typically found among men and short-haired women. The haircut grew in popularity during the 1980s, typically among those who have Afro-textured hair, and became the precursor to other stylish haircuts, such as the high-top fade, low fade, and designs such as crescent moon parts, side parts, and waves in hair.
The shape-up is influenced by hip-hop and pop culture and is common among entertainers and basketball players.[1]