Edith Wharton 
The House of Mirth [EPUB ebook] 

A bestseller when it was originally published nearly a century ago, Wharton's first literary success was set amid the previously unexplored territory of fashionable, turn-of-the-century New York society, an area with which she was intimately familiar.
The tragic love story reveals the destructive effects of wealth and social hypocrisy on Lily Bart, a ravishing beauty. Impoverished but well-born, Lily realizes a secure future depends on her acquiring a wealthy husband. Her downfall begins with a romantic indiscretion, intensifies with an accumulation of gambling debts, and climaxes in a maelstrom of social disasters.