Position your arms away from your body. Position your arms so that they are away from your body. Placing one on a hip is a good look, because it helps define your waistline. If you keep your arms at your sides, it can make you look boxy, and can smush your non-existent arm fat, making your arms look bigger than they really are. If you think that having one hand on your hip is a bit too dramatic, then you can keep your arms at your sides, but place them a bit away from your waist and body, so they aren't flatted against your sides.
