Britney Spears’s children were safely with Kevin Federline when the pop singer was taken to the hospital Thursday morning for the second time for a psychological evaluation, a source says.

Federline, 29, was not directly involved in these latest events, “but he was aware of what was happening,” says a Federline friend.

Former E.R. star Julianna Margulies and her lawyer husband Keith Lieberthal welcomed a baby boy, according to the couple’s family.

“Obviously I’m utterly delighted to be a grandfather,” said Keith’s father, Dr. Kenneth Lieberthal, when reached. “I have to say, he is cuter than any other baby I’ve seen.”

Margulies’s mother, Francesca, was coy when asked about her daughter’s new son, saying, “I better not open my mouth. I don’t want to get in trouble with my daughter.”

Mary Lynn Rajskub, who plays computer whiz Chloe O’Brian on Fox’s 24, is pregnant, she says.

Rajskub, 36, and her live-in boyfriend Matthew Rolph, 27, a personal trainer, are expecting their first child at the end of the summer.

“With the strike going on, I had to keep busy!” Rajskub jokes. “We are thrilled and couldn’t be more excited.”