PROBLEM TO BE SOLVED: To adjust a posture that makes person's back susceptible to curved deformation.SOLUTION: Posture adjusting clothing is formed of a stretchable material, and arranged in such a manner as to be elongated in an obliquely downward direction along a wearer's seventh costae from his/her seventh thoracic vertebra to side parts of his/her right and left seventh costae when he/she wears the posture adjusting clothing. The posture adjusting clothing comprises a first power part 21 that has a great force for tightening him/her when he/she wears the posture adjusting clothing, and a covering part 10 that has a tightening force smaller than the first power part when he/she wears the posture adjusting clothing.
