US News

JONAS’ JERSEY GIRL

She’s the luckiest girl in the ‘tween pop kingdom.

But before she shot to fame as pop star Kevin Jonas’ brand-new fiancée, 22-year-old Danielle Deleasa was just a quiet, churchgoing girl who still lived with her parents and cut hair in a New Jersey salon.

“She’s sweet and kindhearted — there’s not a mean bone in her body,” a beauty-school classmate told The Post yesterday. “This is just so great for her.”

One of four kids in a devoutly Christian family, Danielle was once described as “a wallflower” by her mom, Angela.

She met Jonas in 2007, when their families were both on vacation in the Bahamas.

He was instantly smitten, friends said.

Danielle — who was preparing to graduate from beauty school in Parsippany and working at the nearby DePasquale Salon — had no clue who the Jonas Brothers were.

Jonas pursued her, and she was soon driving to work with a picture of him in her car, friends said.

He often visited Danielle in Denville, NJ, shopping at local stores, stopping for coffee at Starbucks, and signing autographs for people in the town.

“Kevin couldn’t have found a kinder, gentler or more perfect woman,” a longtime Deleasa family friend said yesterday.

The squeaky-clean ‘tween idol — who famously sports an abstinence “purity ring” — stunned fans Wednesday when he showed up at Deleasa’s parents’ Denville home, dropped to one knee and proposed.

“She said, ‘Yes, yes, yes,’ like 500 times super-fast in a row,” Kevin, 21, gushed to People.

Danielle, Jonas said, is “the most amazing girl in the world.”

After she accepted the 3-plus-carat, platinum cushion-cut diamond ring Jonas co-designed with luxury jeweler Jacob & Co., Kevin and Danielle had a celebratory sleepover at her parents’ house.

Additional reporting by Christopher Sadowski

lorena.mongelli@nypost.com