The couple welcomed a daughter, North "Nori" West, in June of last year and got engaged in October.
Added another source, "She wants her kids to be close in age."
Kardashian and the rapper are reportedly keeping their wedding plans under wraps to the point their own guests won't even know the venue until they arrive in France later this month.
"She hasn't even told her sisters," an insider recently told Us.
(Photo credit E!)
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