PLAYBOY ALEX'S PRIVATE DANCER

By BOB SHEMELIGIAN in Las Vegas and DAN MANGAN in New York

June 1, 2007 -- The busty blond gal pal of married Yankee superstar Alex Rodriguez is a longtime stripper and Playboy Bunny wannabe who has danced at one of A-Rod's favorite jiggle joints, The Post has learned.

Joslyn Noel Morse, 30, who most recently was an exotic dancer at Scores Las Vegas, has been repeatedly spied with the Yankees' $252 million man in Tampa, Miami, Dallas - and in Toronto, where on Sunday, they had a cozy dinner at a steakhouse.

The pair later ducked into a local strip joint before heading back to his hotel.

Morse is a corn-fed Catholic-school girl from Iowa who quickly took up the stripping trade after high school, sources said. For the past decade, she was licensed to work as an "entertainer" at several Vegas strip clubs, according to Nevada state records.

The diminutive damsel is a workout fanatic with a hard-cut physique who appeared topless in an October 2001 edition of the skin magazine Playboy's Casting Calls.

Morse's secret identity came to light yesterday as the naughty Rodriguez was spotted strolling through Boston with his pretty, petite wife, Cynthia, who repeatedly flashed a grin. She held his arm outside the Ritz Carlton hotel.

Cynthia, who bore the couple's only child, Natasha, in 2004, said nothing as the powerhouse third baseman scribbled his name on paper and baseballs for fans.

"It's been enough," A-Rod sighed in frustration as he signed autographs, ready to begin the Yankees' three-game series against the arch rival Red Sox.

The couple dined last night at the upscale Beantown steakhouse Grill 23. The couple - who spent two hours at dinner before heading to their hotel room - had nothing to say to a Post reporter waiting outside.

Several people who know Morse said the former high-school cheerleader is the same blonde The Post photographed Sunday boldly strutting around Toronto with Rodriguez.

"I was absolutely shocked, because it totally came flooding back that this is a girl I went to high school with," said Daniel Lundby, a New Yorker who was a grade ahead of Morse - one of the "popular party girls" - at Regis HS in Cedar Rapids, Iowa, in the mid-1990s.

"It was just shocking that a little girl from Iowa" is hanging out with A-Rod, said Lundby, whose school buddies were buzzing about Morse's photos in The Post. "She was cute then. She's cute now."

A woman who knew Morse and her three younger sisters as a teen said Morse was "sort of a wild child."

"She's just one of those people who have just that sort of aura around them. You know, they're cool and confident, but it's intimidating," said the Cedar Rapids woman. She said Morse started stripping in Iowa soon after high school.

Last year, Morse worked at Scores Las Vegas, an outpost of the famed strip-club chain, which has two locations in Manhattan.

Rodriguez, 31, is a big fan of Scores Las Vegas, whose Web site boasts of "Elegance, Gorgeous Girls and Superior Service."

Sources said A-Rod regularly dropped by its 25,000-square foot, 500- dancer space regularly - "off-season and during the season" - most recently several weeks ago during a Yankee road trip.

"We don't comment on our celebrity clientele," said a spokesman for the New York-based Scores chain, who nonetheless confirmed that Morse has been a Scores girl in Las Vegas.

Morse has jiggled her way through pricey Vegas clubs, including the Spearmint Rhino, Masters, Treasures Gentlemen's Club, Jaguars, Sapphire Gentlemen's Club and Seamless, records reveal.

She also has been listed as president of the small Juggernaut Records label, also based in Vegas.

On Wednesday, The Post exclusively detailed how A-Rod and his lady friend dined Sunday at the Toronto steakhouse.

Then they visited the all-nude Brass Rail strip club before calling it a night and getting onto an elevator alone together at the Four Seasons hotel, where the Bronx Bomber was staying.

Meanwhile, observers have been continuing to report sightings of Rodriguez in Manhattan strip clubs, including Scores on the East Side - where he favors a private room for his lap dances - and other nudie bars around the country.

A source told The Post yesterday that he once spied Rodriguez in the Hustler club on the West Side, where he allegedly spent a couple of hours secluded with a dancer in a private room and left with his pockets an estimated $5,000 lighter.

Another source said the slugger abruptly stopped visiting Manhattan's V.I.P. club, which had been a regular haunt of his, right after The Post's Page Six reported he was spending quite a bit of time there with a beautiful Brazilian-born dancer.

The Dallas Observer newspaper blog yesterday revealed that in 2004, Rodriguez had been spotted by "multiple eyewitnesses" visiting the swingers club Iniquity there on two nights months apart.

The blog said sources indicated Rodriguez - who again was without Cynthia - "was merely a spectator and not a player at Iniquity."

The Post earlier revealed that A-Rod and a blonde were seen in a Dallas strip joint early last month.

Morse's U.S. postman dad, Allen, and mom, Diann, a Catholic-school director, live in a tidy, two-story house on an acre of land in a small town outside Cedar Rapids.

The man who answered the door at the Morse family home slammed it in a reporter's face when asked last night if he would discuss his daughter's relationship with the brawny ballplayer.

Several neighbors said they realized only in recent days that the mystery blonde featured in The Post was a hometown gal. At Regis HS, from which Morse graduated in 1995, the future tabloid cover girl was not into "joining clubs," a neighbor said. "She would be more of the dating, partying personality."