Kate Gosselin: I Want the Kids!

The custody battle is on: Kate Gosselin will use footage from Jon & Kate Plus 8 to prove she should get full custody of the children she shares with soon-to-be ex Jon, 32. A source says Kate, 34, planned to split custody 50/50, but she reconsidered when her kids called while an unapproved babysitter, Stephanie Santoro, was on duty on Aug. 13.

"She doesn't feel comfortable allowing Jon to have custody when she can't trust him to keep them safe," the insider says.  The source says the two oldest girls, Cara and Mady, both 8, may choose which parent's house they call home. The insider says, "When Jon starts acting like an adult, she'll reconsider."

Perhaps that explains why the ladies' man -- scared into staying in now that he could lose custody -- canceled his plans to party at Shrine at the MGM Grand at Foxwoods in Connecticut on Aug. 22.