The youngest member of the Kardashian-Jenner crew, who in the past has donned costumes such as sexy warrior princess and (the questionable) sexy "Eskimo," took things one step further this year and literally got dirrty.
That's right, for her second costume of the Halloween season ― the first was a skeleton ― the 19-year-old dressed up as Christina Aguilera from her infamous 2002 "Dirrty" music video. And yes, there were assless chaps, (faux?) facial piercings and extra glossy lips.
Just take a look for yourself ― Kylie nailed this one: