Sex, shopping, and sisterhood - for three young women in Manhattan, it's all about living life on top.

Sophie Steele, twenty-two and fresh out of business school, thinks she has it all: beauty, an MBA, and a high-powered job at a hedge fund in New York City. But Sophie's about to uncover a whole new life - a life filled with beautiful people, exclusive parties, and tantalizingly hot sex - when she moves into her older sister Bella's fabulous Tribeca penthouse apartment.

Bella Steele, a Penthouse Pet and Manhattan's hottest glamour model, can have her pick of rich, sexy guys...