衣衫不整

yīshānbùzhěng
  1. to be dressed too casually
  2. to be dressed untidily

Wiktionary

Entry Composition

1 衣衫 yīshān
  1. clothing
  2. unlined garment
2 不 bù
  1. no; not so
  2. (bound form) not; un-
3 整 zhěng
  1. (bound form) whole; complete; entire; (before a measure word) whole; (before or after number + measure word) exactly
  2. (bound form) in good order; tidy; neat
  3. (bound form) to put in order; to straighten
  4. (bound form) to repair; to mend; to renovate
  5. (coll.) to fix sb; to give sb a hard time; to mess with sb
  6. (dialect) to tinker with; to do sth to