Lydia Hearst-Shaw, the 21-year-old great-granddaughter of publishing baron William Randolph Hearst (and daughter of SLA-abductee-turned-John Waters’ actress Patty Hearst) obviously doesn’t need to be gracing the cover of Italian Vogue, nor the ads for Bottega Veneta, to pay the rent. But at least, becoming an in-demand model has gotten her out of the house.

“Before I started working, I never came to New York,” admits Hearst-Shaw, who’d been sequestered in Wilton, CT, until eight months ago, when she moved to the Big Apple. “It took me aback at first.”

Yet, check her out now: boldly parading in the window of Barneys New York for the Imitation of Christ fashion show, jetting to Paris for magazine shoots, doing the pre-Oscars party crawl in L.A. So, we figured, as long as she’s busy racking up frequent-flyer miles, why not give her a pair of jeans to road-test along the way?

The ones she chose – a pair of Rock & Republic Scorpions – were so miniscule, we thought no one could ever fit into them:

How they working on you, Lydia?
“They fit great. They really elongate the leg. And I love that they’re not normal jeans. They’re a little different -- they have big deep pockets in front, and a rip below the knee, and worn-in holes -- they’re super-aged, and you don’t see jeans like that anymore. I’m not too particular about wash, but I really like the light denim. They’re easy to dress up or down.”

Where did you wear them?
“I wore them to [the Bryant Park] tents. I wore them to the Heatherette show, but I wore Heatherette after the show. I went to dinner at Matsuri in them with a bunch of people. I went on castings, to sittings. They’re really comfortable, so I went pretty much everywhere in them.”

What have you been wearing them with?
“I wore them with tank tops, wife beaters. A cute Calvin Klein sweater. Big heels. My Tara Subkoff for Easy Spirit half-boots.”

Who are some of your favorite designers?
“I love everything from vintage to Heatherette. I throw it all together and somehow it works out. I’m into Thierry Mugler-type deals, Chanel, Lanvin. You never know what I’m gonna do. As for jeans, I like Edun – they’re pretty comfy. Michael H. – they’re really unique. And Immortality, a new brand where each pair of jeans is named after a goddess. I’m into Venus and Eros, which has crystal belt loops. Basically, my style is kind of rocker chick with an edge – I like clothes that aren’t plain and simple.”

What are some of your favorite vintage shops in NYC?
“What Goes Around Comes Around – I’ve gotten amazing fur jackets from there. Amarcord, next to Heatherette headquarters. They have great coats, hats, and sunglasses. Fabulous Fannies is incredible for funky, vintage glasses. I’m obsessed with that store. Right now I wear big black Prada glasses to read with, but it would be fun to get a cool vintage reading pair.

Get It:
R&R Scorpion jeans in Xenon wash, $235, bergdorfgoodman.com

What Goes Around Comes Around, nyvintage.com

Amarcord, 84 E. 7th St., NYC; (212) 614-7133

Fabulous Fannies, 335 E. 9th St., NYC; (212) 533-0637