Kim And Khloe Kardashian Wear All Black Everything!

We almost don't recognize Kim Kardashian when she isn't flaunting her (second) favorite accessory -- her boobs!

Looking rather understated, the reality star headed to the studio in Los Angeles today to do some work on her E! show Keeping Up With the Kardashians. Meanwhile, across town, Khloe hit the gym in an all-black ensemble. You'd think she could mix up the color scheme a bit since this is her 500th day in a row working out!!! No hot pink or Lululemon lavendar here, folks! You know what they say ... once you go black ...