For "The Real Housewives of New York City," the drama off screen is as heated as what you see on TV.
Jill Zarin, the likable star of the Bravo show, borrowed a Chloe dress from the high-end boutique Intermix for her daughter, Ally, a week ago Tuesday.
"Jill was at the store and acting like a total nightmare. Her stylist took home all these dresses and then returned one with a huge stain down the front," said our insider. "She didn't offer to pay for the dress or even say she would pay to have it cleaned."
But Zarin told Page Six that "the dress had a tiny little spot on it" when her stylist, Eric Stern, sent it to her. "I told my daughter to wear it on the carpet for [charity] Operation Smile anyway. Nobody would notice it, and she could bring it back."
Zarin said her college-bound daughter "returned the dress on time and told the store the truth" by pointing out the spot.
Stern backed Zarin, saying he pulled dresses for all six of the stars of "Real Housewives" that day.
"I have a wonderful relationship with Intermix," he said, though he couldn't say whether the stain was there when he sent it to Zarin. "I take full responsibility for the situation, and I am handling it with Intermix."
Intermix had no comment.
Meanwhile, Zarin mouthy co-star Kelly Killoren Bensimon, who's celebrating her 41st birthday at The Gates tonight, continues to push buttons. In addition to squabbling with Bethenny Frankel and talking about her modeling career, Bensimon is often heard touting her Ivy League education, from Columbia University.
But a source who attended Columbia snarked, "Kelly went to the Columbia extension college. Anyone can go there."
Bensimon's rep said, "Kelly went to Columbia University School of General Studies and graduated in 1998."
The General Studies program, according to its Web site, is "created specifically for returning and nontraditional students."