Nick Cannon: Mariah Carey Doesn’t Know Who Kim Kardashian Is, Fires Nannies “Every Other Week” Read more: http://www.usmagazine.com/celebrity-news/news/nick-cannon-mariah-carey-doesnt-know-kim-kardashian-fires-nannies-201434#ixzz2xqYKSOH0 Follow us: @usweekly on Twitter | usweekly on Facebook