The phrase "narrow hips" refers to having hip bones that are closer together or narrower than usual. It is a physical description of someone's body shape.
Sentences with «narrow hips»
I have a flat wide butt with narrow hips and long legs, pants almost never fit right ~ ~ I'm like a moving target. (thefashionablehousewife.com)
I'm very small built — short and with very lean bone structure (including upper and lower body and also narrow hips). (rachaelattard.com)
These cats have long narrow hips and broad shoulders. (tinpaw.com)