Looking to hock a few more copies of her book, Nicole Richie was spotted signing autographs in Los Angeles yesterday (October 6). The celebrity mommy looked to be in good spirits as she chatted with fans at The Grove shopping center, sporting a flirty short hairdo and a cable knit sweater. Earlier this week, Nicole was interviewed on Ryan Seacrest’s KIIS FM radio show where she explained that she runs her house on a tight routine. "My kids are in bed by 7 and I try to be in bed by 10 or 10:30, it's good to have your kids on a schedule. The morning is my time and in the evening I might go ou...