NEW YORK (AP) – Nicole Richie first became a tabloid regular when she co-starred with childhood pal Paris Hilton in the reality show 'The Simple Life'.

Several years later, the 29-year-old is still a paparazzi target, but she has broadened her resume.

The daughter of singer Lionel Richie has transformed her image from red carpet regular and party girl to a hip, young mom (she has two children with musician Joel Madden of the band Good Charlotte), fashion designer, occasional actress and author.

Her new book, 'Priceless', is now in stores.

It's about a wealthy young woman named Charlotte whose stockbroker father is busted for embezzling millions from his clients. Charlotte ends up escaping the barrage of media attention surrounding the scandal in New York City and relocating to New Orleans where she builds a life for herself.

"I don't think anyone is just a one-dimensional person. There are a few different people inside of every person," Richie said.

This isn't Richie's first foray into writing. Her first novel, 'The Truth About Diamonds', was about a girl who is the adopted daughter of a famous male singer and part of Hollywood's in-crowd. Richie denies reports the book, a New York Times best-seller, was "semi-autobiographical", saying her writing is influenced by personal experience, but the book wasn't about her own life.

For 'Priceless', Richie wanted to take a different direction.

"I wanted to write a story about the journey of a girl's life and about the steps that she takes to find her place her in the world and find her own voice."

Richie also has capitalised on her status as a fashion "it girl" with an accessories line, House of Harlow 1960, and a clothing line called Winter Kate. She serves as creative director for both.