ichidan verb, intransitive verb
come loose; come undone; become disheveled
Describes clothing that becomes untidy or loose while being worn, often due to movement or poor fit.
一日中外を歩き回って、スーツがすっかり着崩れてしまった。
After walking around all day, my suit had become completely disheveled.
このワンピースは生地が柔らかくて、すぐに着崩れる。
This dress is made of soft fabric and quickly loses its shape when worn.
ichidan verb, intransitive verb
be worn out of shape
Refers to clothing that has lost its original form through repeated wear, not just temporary untidiness.
お気に入りのセーターが着崩れて、もう外に着ていけない。
My favorite sweater has become worn out of shape and I can't wear it outside anymore.