In a recent interview with Elle magazine, Beyonce's mother, Tina Knowles, admitted to getting physical her superstar daughter over dodgy behavior:

Beyonce's mom, Tina Knowles, also opened up about slapping her daughter for acting like a diva during a promotional appearance.

"My husband came up and said, 'Tina! She's got the No. 1 record on the radio!' I said, 'I don’t care!'" Tina says. "I was terrified. I had seen people take your child and turn them into something you didn’t want them to be.

"I taught my girls to pick up their own suitcases," she adds. "Pretty is as pretty does. Like my mother said, 'You got to be cute on the inside.'" (Source)