Also girls don't look weird without a belt. If you are a guy and your shirt is tucked in, without a belt for some reason just looks empty and weird. I'm not sure if it's the belt loops, the waist band, or just the lack of a decorative interruption in the outfit, but it just looks weird. On a girl like in the picture, even with belt loops it doesn't look weird. I think it's because the natural hip/butt shape makes the visual change on its own, where guys don't really have that.