NEW YORK — To many women who reside in tony brownstones above 64th Street, charity work means little more than attending committee meetings, drumming up money from a few pals and getting photographed at the annual soirée in the sponsor's finery.

But for Jessica Seinfeld, who with her husband, Jerry, owns not only a duplex on Central Park West but also a sprawling $32 million Amagansett estate complete with a baseball field, benevolence begins with the nonprofit she founded in 2001. In the past five years, Baby Buggy has evolved from a small operation in the Chelsea Market organizing weekend baby equipment drives to a charity that has distributed 1.4 million items to needy families.

Beginning today, Baby Buggy is hosting a two-week drive in the Hamptons, encouraging the well-to-do to donate car seats, strollers and other supplies to local social service centers. Come November, Baby Buggy will also participate in Lucky magazine's Lucky Shops event. In anticipation, Seinfeld discussed the charity, her three kids and the importance of, as she calls it, "stuff."

WWD: What's your goal for Baby Buggy?

Jessica Seinfeld: I've never been much of a five-year planner. I wouldn't say I'm an MBA candidate by any means. But now we get offers all the time to grow and go to London, Los Angeles and Chicago. We're starting to look at them seriously.

WWD: Is there a moment that you remember as immensely gratifying?

J.S.: This little girl who had never had a skirt just could not believe she now had a skirt. We gave her tights to go with it, because she would have worn the skirt and it was 20 degrees outside. I said, "Absolutely not. She needs some tights." You know, I used to think, "Oh, it's just stuff. A lot of organizations do what we do, but they do more social service work and rehabilitation. I don't have a master's in social work; I just get stuff to people." Now I think that stuff changes people's lives.

WWD: How would you describe your own mothering style?