Multiple sources in the Jackson family tell us even if Katherine Jackson gets custody of Michael Jackson's kids, Michael's big sister Janet Jackson will raise the children. The 59-year-old singer, who shares a home in Las Vegas with her hubby of over 20 years, has kept a low public profile, but privately she has been deeply involved in the lives of Michael's children.We're told Janet is currently living with Katherine at the family's Encino home and is caring for the kids each day. As for the kids ... they all adore her.Although the family is divided on many issues involving Michael's estate, we're told there's no argument when it comes to Janet caring for the kids. Whether she eventually becomes the custodial parent in name or not, she will end up with the primary responsibility of raising Michael's three children.