Nina Ricci gives Sarah Jessica Parker used gown for 'Sex' premiere!

Is Nina Ricci's designer Olivier Theyskens a dress-passing fashion trollop?

Why would Nina Ricci loan a silver strapless gown to Sarah Jessica Parker for her big New York premiere of "Sex and the City" movie that had already been worn by socialite Lauren Santo Domingo to the New York Met Costume Institute gala just a month before?

The double-dipping news was broken by New York Times style scribe Cathy Horn on her blog. But it turns out Lindsay Lohan also wore it for a Harper's Bazaar fashion shoot and was photographed by ''throng of paparazzi" in the gown. Horn writes:

I spoke to Parker, and to Mario Grauso, the president of the fashion division at Puig, which owns Nina Ricci. What bothered Parker was that she felt she had been deceived by both Grauso and Theyskens, who met her in the studio and assured her that the dress had never been worn except for magazine shoots.

"In the big picture, this is not important, but there is a relationship between the entertainment industry and fashion," Parker said on Thursday evening, adding. "We've watched sales dwindle and we've watched people be less inclined to spend money on clothes." To Parker, these are reasons for companies to take particular care with their relationships. "Look, my affection for the dress hasn't changed," she said, "but what they did was so short-sighted. It's just unethical and disappointing that they would allow the dress to be worn again."

Parker says she remarked to Theyskens during the fitting that she was surprised the dress hadn't been worn before. He assured her it hadn't. "He didn't say, 'Well, actually I just escorted Lauren down the red carpet at the Met.' " said Parker, adding, "I just wish it had been handled differently and they had been straight about it."

When I spoke to Grauso, he said, "I'm upset that she's upset." He explained that when Parker and her stylist asked if the dress had been photographed, he had no reason to mention Santo Domingo, a socialite who worked at Vogue and who recently had her wedding photographed for the magazine. "Is Lauren a celebrity?" Grauso said. "It depends on how you look at it."

So now he's gonna have this Lauren Santo Domingo miffed at them too! Is she a celebrity? indeed.

And will this brouhaha make Reese Witherspoon nervous?

It should. Remember she's been wearing Theyskens' designs after she got burned by Chanel for giving her a dress for the Screen Actors Guild Awards that was previously worn by Kristen Dunst to go to a Golden Globes party.

What do you think? Is all this dress-passing unethical, immoral and simply unforgivable? Or is it a waste of everyone's time and energy talking about it?

Photos: WireImage

y