The twins were at UCLA Medical Center for a week and a half, and we're told toward the end of last week, they were released. TMZ broke the story ... the twins were born prematurely and placed under lights ... presumably to cure jaundice.
The boy and girl now join Blue Ivy and their parents at a spectacular $400,000-a-month Malibu rental ... as the Daily Mail first reported. It sits on 6.3 acres with jetliner views of the Pacific.
We're told they will be spending the summer at the estate, and they're still looking for a permanent L.A. home.