Baggy pants and sagging pants are a distinct trend and popular look in hip hop culture. According to fashion legend, the look began in the prison system more or less by accident. Prisoners were often assigned ill-fitting pants and were not allowed to wear belts. As such, they often walked around with oversized, drooping drawers.
The look came out of the jails and became big in urban fashion. It soon swept the U.S. and beyond. The sagging trend reached its peak in the 1990s but hasn't totally faded from popular style since.