Beyonce laughed: "The song was on the Chipmunks series and all of the kids are like, 'Oh, that's the Chipmunk song!' My daughter actually does the hand movement and sings, 'Uh oh'."
The 31-year-old star - who has just announced her world tour - told how being a mother has inspired her.
She said: "My husband is incredible, he's so supportive. And my daughter is... I mean, when I wake up in the morning, the best thing in the world is seeing her face. She's starting to talk. It's just such a beautiful time in my life to have a child and every day see something new and see her learn something new."