Carole Radziwill and LuAnn de Lesseps were at odds throughout season seven of The Real Housewives of New York City, and according to Radziwill, their drama came to a head during filming on the reunion.

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During a new interview, Radziwill alleged her co-star, whose niece's ex-boyfriend dated Radziwill during season seven, lunged at her as they attempted to settle their differences with Andy Cohen acting as mediator. First, however, she discussed the drama over Adam.

"Luann was very uncool," Radziwill told E! News on Wednesday. "There was a lot of unnecessary screaming over something that…Heather and I felt, you can do whatever you want and we're cool with it, but don't leave your naked guys in our rooms. And she got so offended that we were kind of pissed off about it, it was bizarre. But only in Luann fashion can she do that."

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As for the reunion, which was recently shot in New York City, Radziwill claimed de Lesseps was but on the spot -- and didn't take it very well.

"I think she felt very defensive. There was a lot going on that she had to account for. You know how reunions are. [Andy Cohen] holds your feet to the fire and he wants answers," Radziwill explained. "She was as defensive as I've ever seen her. At one point she got up and lunged at me. She got up and Andy told her to sit down."

The Real Housewives of New York City airs on Tuesdays at 9 p.m. on Bravo.

Tags: Carole Radziwill LuAnn De Lesseps Bravo Reality TV The Real Housewives of New York City