Kylie's older sister, Kim Kardashian West, commented on the post, writing: "??? ? ??."
The pics come shortly after Kylie's break from rapper Travis Scott. The couple of two years are taking a break and a source confirms to ET that the two "haven't been together as a couple for roughly a month."
They remain friendly as they co-parent their 1-year-old daughter, Stormi.
This isn't Kylie's first bold look since her split. She also attended Justin and Hailey Bieber's South Carolina wedding earlier this week in a stunning gold gown.