Back leaning posture: A posture is considered backward leaning if the shoulder stance tilts backwards compared with the rest of the torso, causing the back of the jacket to be longer than the front. This alteration will increase the length of the jacket in the front and shorten the length of the jacket in the back to balance the hemline.
Forward leaning posture: A posture is considered forward leaning if the shoulder stance tilts forward compared with the rest of the torso, causing the front of the jacket to be longer than the back. This alteration will increase the jacket's length in the back and shorten it in the front to balance the hemline.