Nicole: Wild to ... Mild?

It's a total-life makeover: From her hair to her diet to her friends, see Richie's most dramatic changes. By Serena Kappes

HER LOVE LIFE

Then: Richie was an L.A. club crawler who partied with guy pals like Matthew Felker (in 2004), a model-actor who kissed Britney Spears in her "Toxic" video.
Now: She's been engaged to Adam "DJ AM" Goldstein, who calls Richie "my best friend," since February. The couple share a home in the Hollywood Hills with their dogs, Foxy Cleopatra and Honey Child, and their cat, Shalom.