Does anyone know this book?

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I posted a few days ago about whether anybody knew of a website where I could briefly describe the plot of a book that I read a few years ago, and would like to read again -- except I can not remember either the title or the author of the book. I received a number of responses to my question, and some people suggested that I post the info I remember here to see if anyone on MyLot might be able to help. So here goes -- This is what I remember: The wealthy husband of a woman who has been a socialite (in New York City?) dies and does not leave her money. If I remember she was somehow cheated out of the money or will or something. Many of her former friends turn against her. She has to find a place to live and significantly alter her lifestyle. If I remember correctly, she finds a job working as a salesperson in a department store. I think that at the end she somehow manages to turn the tables on the people who had cheated her, but I don't relly remember how. All of this is kind of a growth experience for her and that is why I am interested in re-reading the book. So, does this sound familiar to anyone?