The phrase "young slim" is grammatically correct and can be used in written English. It is commonly used as an adjective phrase to describe a person's age and body type. Example: The fashion industry often promotes an unrealistic standard of beauty, featuring young slim models in their advertisements.
Was this young slim cat Géricault's?
Young, slim, must look, act & think like a star.
THE CROWD The clientele is young, slim and good-looking.
All of this ridicule is just a distraction from the zucchini's many charms, which are especially apparent in young, slim specimens.
The designer himself, young, slim and not so shy, talks to camera about how he perceived women's wearing the pants, while keeping their own particular beauty and character.
The documentary focuses extensively on Mario Travaglio, a young, slim reporter who is introduced by the narrator as "one of Italy's most respected investigative reporters".
His sidekick is Le Jia, a younger, slimmer (but also bald) man dubbed the show's "psychological analyst".
The Kelly who drove his Ford Escort through the cornfields was younger, slimmer and poorer than this version.
Singers will probably be younger, slimmer, more photogenic; Gelb reportedly plans to lean on Anna Netrebko and Rolando Villazón, two singers with a certain movie-star quality.
Doe-eyed and boyish in a gray wool sweater and Seven jeans — both nonorganic, he confessed — he brought to mind a younger, slimmer Matthew Broderick.
When Big Boi shifted to older material, the video screen behind him flashed reminders of what feels like a distant past: a younger, slimmer Big Boi alongside his OutKast partner, André Benjamin, in the gritty clip for their first single, "Player's Ball," from 1993; the duo mugging exuberantly through audacious, high-concept videos for "B.O.B (Bombs Over Baghdad)" (2000) and "Ghetto Musick" (2003).
