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Khloé's little sisters, Kendall and Kylie Jenner, think it'll happen sooner than later.
"I know Khloé has always wanted to have kids, because when me and Kylie were little, she would babysit us," 13-year-old Kendall told us last night at Onitsuka Tiger's record release party for Selena Gomez and the Scene's debut album, Kiss & Tell.
"She was like our second mom," she said. "I know she'll be a great mom."
Kylie, 12, added, "I just can't wait for her to have kids!"
As for how Lamar is fitting into the big Kardashian-Jenner bunch…