Khloe Kardashian has no problem sharing her secrets!
The "Keeping Up With the Kardashians" star got extremely candid about her personal life during a game of "Know Thy Sister" with Kourtney Kardashian for Kourt's app.
"You guys know I love a little friendly competition, and some of these questions were hilarious," the 36-year-old captioned the video, on her site.
"Watch the whole video to see who won this round, and be sure to check back soon for the next one!” she added.
The reality stars were first asked their favorite color. "I think everyone in the entire universe knows that answer," Kourtney said about her sister, while writing down "purple."
Later in the video, Kourt's asked when Khloe lost her virginity. "I think it was 15," the mother-of-three responded.
While Khloe didn't go into too much detail, she did confirm Kourtney's answer by writing "15" on her white board.
Later, the duo revealed who were some of Khloe's favorite music groups in high school, naming 'NSYNC and Ace of Base as her top two.
Make sure to check out Kourt's website to see the full video.
What do you think about Khloe's virginity confession? Sound off below and check out the gallery above to see more stars' first times!