In 2003, Nicole and then-BFF, Paris Hilton, starred in the reality series The Simple Life. The California-natives played up their elitist upbringing, comically trying to make their way at menial jobs in a small, rural community.
In Feb. 2003, the reality star was arrested in Malibu and charged with possession of heroin while driving without a license. Following a stint in rehab, she received another DUI in Dec. 2006. In July 2007, she was sentenced to four days in jail, but served less than 2 hours due to overcrowding.
In Nov. 2006, Richie began dating Good Charlotte singer Joel Madden. In Jan. 2008, the couple welcomed daughter Harlow Winter Kate, and in Sept. 2009 they had a son, Sparrow James Midnight. The duo wed in Dec. 2010 at Lionel Richie's L.A. estate.
In Oct. 2008, Richie debuted her jewelry line, and in Spring 2010 it was extended to apparel and shoes. She also created a collection of maternity clothes.
She told Harper's Bazaar in 2008: "I owe [my] baby my life." Her father agreed, telling the magazine: "Motherhood has given her all the keys to understanding how her mother and I were trying to raise her. Now it has come full circle."