Kim, Khloe and Kourtney Kardashian unite with Kris Jenner in glamorous black as Kylie completes the clan at Cosmopolitan 50th birthday Party.

A family affair: (From left) Khloe, Kourtney and Kim Kardashian, along with mother Kris Jenner looked chic in black at Cosmopolitan magazine's 50th birthday party in Los Angeles in Monday, as Kylie bucked the trend in white
They've been brought together on the cover of Cosmopolitan magazine for the first time in years.
And the Kardashian sisters - all bar supermodel Kendall Jenner, 19 - were present and correct on Monday night for the magazine's 50th anniversary celebration in Los Angeles.
And while Khloe, 31, Kourtney, 36, and Kim, 34, united with their 59-year-old mother Kris Jenner in glamorous black ensembles, the littlest of the bunch, 18-year-old Kylie, bucked the trend in a thigh-skimming little white dress.  
More photos after the cut ..

Koordinated!: The family all wore black, except for Kylie, and Kris sported a jumpsuit like Kourtney'sSomething's missing... The group were notably missing Kendall Jenner to complete the line-up
Cover girls: The group, along with model Kendall, grace the cover of Cosmopolitan's latest issue
Read it: The famous family star on the cover of November issue of Cosmopolitan