Nicole Richie has fired her personal stylist of over two years, Rachel Zoe, reportedly because she "wanted to surround herself with positive people and influences." Zoe has been criticized for promoting unhealthy body images, and there were even rumors that of her peddling crystal meth along with her fashion advice in the hopes of keeping her clients stick-thin. "Nicole didn't trust Rachel anymore," says a friend of Richie. "Zoe didn't take the news well." Zoe's rep insists the split was amicable, however.