Kylie Jenner Rents Hidden Hills Home to Rob & Blac Chyna

Kylie Jenner's putting one of her empty cribs to good use -- we're told she's renting it out to Rob and Blac Chyna.

The new mom and pop moved into the Hidden Hills, CA home this week, and the reason's simple -- Rob and Blac wanted a bigger pad, and to be closer to Kris and Kim's nearby homes with baby Dream now in the picture.

As TMZ reported, BC's house in Tarzana was supposed to be home base once Dream arrived. But that plan's changed, and we're told Rob's still working out leasing terms with his little sis.

This is the same 6 bedroom, 7 bath spread where Chyna recently posed with King Cairo ... Christmas lights and all.

#FamilyMatters