"slender hips" is a correct and usable phrase in written English.
It can be used to describe someone's physical appearance, specifically the size and shape of their hips. Example: The model had a slim figure with slender hips that accentuated her hourglass figure.
Plexiglass discs sparkling with medallions circled the slender hips of cling-film tight skirts and asymmetric dresses.
Many, especially the evergreens, offer shades of blue, sometimes smudged with a soft bloom, as in the slender hips of B. gagnepainii var.
Our waitress, also in black, brought our wine (a terrific Rhone for $29), her mid-calf-length apron tied around slender hips.
The company's biggest hit was Ruth's invention: Barbie, a teenage doll with a tiny waist, slender hips and impressive bust who debuted in 1959 wearing a black-and-white striped swimsuit.
At once familiar and pleasingly exotic, the humanoid Na'vi come with supermodel dimensions (slender hips, a miniature-apple rear); long articulated digits, the better to grip with; and the slanted eyes and twitchy ears of a cat.
Those same women leap on a bar and douse themselves with water -- presumably so their leather pants can get even tighter around their slender hips -- for a bunch of leering drunks.
Jagger, still an energetic showman at 72, jutted his ever-slender hips in impressive dance sequences and led crowd members to stomp and clap in unison for "Paint It Black".
Slender and hip-slung, he looks as self-absorbed as an iPod listener doing a cha-cha.
She is about 5'6", and slender, with narrow hips.
Grégoire and Mani move in the most distended entrance possible, whipping the skirts of their soaking-wet leather dusters to expose their slender, action-figure hips.
In 1961, the Slenderella chain of slimming spas introduced the term "bikini body" to an uninitiated public: "hand span waist — trim, firm hips — slender, graceful legs — a Bikini body!" This ideal physique, Slenderella reassured potential customers, could be achieved without transgressing the social taboo against strenuous exercise, or even messing up their hair.
